1194549540 has 96 divisors (see below), whose sum is σ = 3549619584. Its totient is φ = 299120640.

The previous prime is 1194549533. The next prime is 1194549547. The reversal of 1194549540 is 459454911.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1194549533) and next prime (1194549547).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1194549492 and 1194549501.

It is not an unprimeable number, because it can be changed into a prime (1194549547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 556870 + ... + 559010.

It is an arithmetic number, because the mean of its divisors is an integer number (36975204).

Almost surely, 2^1194549540 is an apocalyptic number.

1194549540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1194549540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1774809792).

1194549540 is an abundant number, since it is smaller than the sum of its proper divisors (2355070044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1194549540 is a wasteful number, since it uses less digits than its factorization.

1194549540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717 (or 2715 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 1194549540 is about 34562.2560027554. The cubic root of 1194549540 is about 1061.0472443573.

The spelling of 1194549540 in words is "one billion, one hundred ninety-four million, five hundred forty-nine thousand, five hundred forty".