1156163680 has 96 divisors (see below), whose sum is σ = 3285999360. Its totient is φ = 375528960.

The previous prime is 1156163653. The next prime is 1156163713. The reversal of 1156163680 is 863616511.

It is a super-2 number, since 2×1156163680² = 2673428909902284800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5886 + ... + 48445.

It is an arithmetic number, because the mean of its divisors is an integer number (34229160).

Almost surely, 2^1156163680 is an apocalyptic number.

1156163680 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 1156163680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1642999680).

1156163680 is an abundant number, since it is smaller than the sum of its proper divisors (2129835680).

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

1156163680 is a wasteful number, since it uses less digits than its factorization.

1156163680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54372 (or 54364 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1156163680 is about 34002.4069736247. The cubic root of 1156163680 is about 1049.5579938542.

It can be divided in two parts, 1156 and 163680, that added together give a square (164836 = 406²).

The spelling of 1156163680 in words is "one billion, one hundred fifty-six million, one hundred sixty-three thousand, six hundred eighty".