1163251664 has 20 divisors (see below), whose sum is σ = 2258947680. Its totient is φ = 580297440.

The previous prime is 1163251637. The next prime is 1163251669. The reversal of 1163251664 is 4661523611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163251669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75782 + ... + 89829.

It is an arithmetic number, because the mean of its divisors is an integer number (112947384).

Almost surely, 2^1163251664 is an apocalyptic number.

It is an amenable number.

1163251664 is a deficient number, since it is larger than the sum of its proper divisors (1095696016).

1163251664 is a wasteful number, since it uses less digits than its factorization.

1163251664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166058 (or 166052 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 1163251664 is about 34106.4753969096. The cubic root of 1163251664 is about 1051.6984345755.

The spelling of 1163251664 in words is "one billion, one hundred sixty-three million, two hundred fifty-one thousand, six hundred sixty-four".