1154934840 has 64 divisors (see below), whose sum is σ = 3480422400. Its totient is φ = 306594432.

The previous prime is 1154934839. The next prime is 1154934841. The reversal of 1154934840 is 484394511.

It is an interprime number because it is at equal distance from previous prime (1154934839) and next prime (1154934841).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154934841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5181 + ... + 48339.

It is an arithmetic number, because the mean of its divisors is an integer number (54381600).

Almost surely, 2^1154934840 is an apocalyptic number.

1154934840 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 1154934840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1740211200).

1154934840 is an abundant number, since it is smaller than the sum of its proper divisors (2325487560).

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

1154934840 is a wasteful number, since it uses less digits than its factorization.

1154934840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43396 (or 43392 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1154934840 is about 33984.3322723869. The cubic root of 1154934840 is about 1049.1860176727.

The spelling of 1154934840 in words is "one billion, one hundred fifty-four million, nine hundred thirty-four thousand, eight hundred forty".