1159156944 has 120 divisors (see below), whose sum is σ = 3692924352. Its totient is φ = 335976960.

The previous prime is 1159156939. The next prime is 1159156949. The reversal of 1159156944 is 4496519511.

1159156944 is a `hidden beast` number, since 1 + 1 + 591 + 56 + 9 + 4 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1159156939) and next prime (1159156949).

It is a self number, because there is not a number n which added to its sum of digits gives 1159156944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1159156949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20524 + ... + 52340.

Almost surely, 2^1159156944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1159156944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1846462176).

1159156944 is an abundant number, since it is smaller than the sum of its proper divisors (2533767408).

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

1159156944 is a wasteful number, since it uses less digits than its factorization.

1159156944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31865 (or 31856 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 1159156944 is about 34046.3939940781. The cubic root of 1159156944 is about 1050.4629686258.

The spelling of 1159156944 in words is "one billion, one hundred fifty-nine million, one hundred fifty-six thousand, nine hundred forty-four".