1156444164 has 36 divisors (see below), whose sum is σ = 2926699776. Its totient is φ = 385024368.

The previous prime is 1156444151. The next prime is 1156444171. The reversal of 1156444164 is 4614446511.

1156444164 is a `hidden beast` number, since 1 + 1 + 5 + 644 + 4 + 1 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 12457 + ... + 49679.

It is an arithmetic number, because the mean of its divisors is an integer number (81297216).

Almost surely, 2^1156444164 is an apocalyptic number.

It is an amenable number.

1156444164 is an abundant number, since it is smaller than the sum of its proper divisors (1770255612).

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

1156444164 is a wasteful number, since it uses less digits than its factorization.

1156444164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38096 (or 38091 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 1156444164 is about 34006.5311962276. The cubic root of 1156444164 is about 1049.6428608521.

The spelling of 1156444164 in words is "one billion, one hundred fifty-six million, four hundred forty-four thousand, one hundred sixty-four".