1150655856 has 160 divisors (see below), whose sum is σ = 3496919040. Its totient is φ = 319258368.

The previous prime is 1150655837. The next prime is 1150655879. The reversal of 1150655856 is 6585560511.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 1778125 + ... + 1778771.

It is an arithmetic number, because the mean of its divisors is an integer number (21855744).

Almost surely, 2^1150655856 is an apocalyptic number.

1150655856 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 1150655856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1748459520).

1150655856 is an abundant number, since it is smaller than the sum of its proper divisors (2346263184).

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

1150655856 is a wasteful number, since it uses less digits than its factorization.

1150655856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 42.

The square root of 1150655856 is about 33921.3186064457. The cubic root of 1150655856 is about 1047.8886844455. Note that the first 3 decimals are identical.

It can be divided in two parts, 1150655 and 856, that added together give a palindrome (1151511).

The spelling of 1150655856 in words is "one billion, one hundred fifty million, six hundred fifty-five thousand, eight hundred fifty-six".