1194891456 has 168 divisors, whose sum is σ = 3659266240. Its totient is φ = 342904320.

The previous prime is 1194891449. The next prime is 1194891457. The reversal of 1194891456 is 6541984911.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1194891457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 440055 + ... + 442761.

Almost surely, 2^1194891456 is an apocalyptic number.

1194891456 is a gapful number since it is divisible by the number (16) 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 1194891456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1829633120).

1194891456 is an abundant number, since it is smaller than the sum of its proper divisors (2464374784).

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

1194891456 is a wasteful number, since it uses less digits than its factorization.

1194891456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763 (or 2742 counting only the distinct ones).

The product of its digits is 311040, while the sum is 48.

The square root of 1194891456 is about 34567.2020273554. The cubic root of 1194891456 is about 1061.1484692428.

The spelling of 1194891456 in words is "one billion, one hundred ninety-four million, eight hundred ninety-one thousand, four hundred fifty-six".