1156115604 has 72 divisors (see below), whose sum is σ = 3143877408. Its totient is φ = 329703360.

The previous prime is 1156115567. The next prime is 1156115641. The reversal of 1156115604 is 4065116511.

It is an interprime number because it is at equal distance from previous prime (1156115567) and next prime (1156115641).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 382459 + ... + 385469.

It is an arithmetic number, because the mean of its divisors is an integer number (43664964).

Almost surely, 2^1156115604 is an apocalyptic number.

1156115604 is a gapful number since it is divisible by the number (14) 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 1156115604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571938704).

1156115604 is an abundant number, since it is smaller than the sum of its proper divisors (1987761804).

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

1156115604 is a wasteful number, since it uses less digits than its factorization.

1156115604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685 (or 3676 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1156115604 is about 34001.7000163227. The cubic root of 1156115604 is about 1049.5434459574.

The spelling of 1156115604 in words is "one billion, one hundred fifty-six million, one hundred fifteen thousand, six hundred four".