1156113660 has 96 divisors (see below), whose sum is σ = 3492099072. Its totient is φ = 284094720.

The previous prime is 1156113643. The next prime is 1156113677. The reversal of 1156113660 is 663116511.

It is an interprime number because it is at equal distance from previous prime (1156113643) and next prime (1156113677).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 709767 + ... + 711393.

It is an arithmetic number, because the mean of its divisors is an integer number (36376032).

Almost surely, 2^1156113660 is an apocalyptic number.

1156113660 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 1156113660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1746049536).

1156113660 is an abundant number, since it is smaller than the sum of its proper divisors (2335985412).

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

1156113660 is a wasteful number, since it uses less digits than its factorization.

1156113660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563 (or 2561 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1156113660 is about 34001.6714295048. The cubic root of 1156113660 is about 1049.5428576905.

The spelling of 1156113660 in words is "one billion, one hundred fifty-six million, one hundred thirteen thousand, six hundred sixty".