1164736644 has 24 divisors (see below), whose sum is σ = 2727829440. Its totient is φ = 386801184.

The previous prime is 1164736633. The next prime is 1164736667. The reversal of 1164736644 is 4466374611.

It is a super-2 number, since 2×1164736644² = 2713222899752765472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1164736596 and 1164736605.

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 7 ways as a sum of consecutive naturals, for example, 177184 + ... + 183639.

It is an arithmetic number, because the mean of its divisors is an integer number (113659560).

Almost surely, 2^1164736644 is an apocalyptic number.

It is an amenable number.

1164736644 is an abundant number, since it is smaller than the sum of its proper divisors (1563092796).

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

1164736644 is a wasteful number, since it uses less digits than its factorization.

1164736644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361099 (or 361097 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 1164736644 is about 34128.2382199843. The cubic root of 1164736644 is about 1052.1457688585.

The spelling of 1164736644 in words is "one billion, one hundred sixty-four million, seven hundred thirty-six thousand, six hundred forty-four".