1164213864 has 64 divisors (see below), whose sum is σ = 3527928000. Its totient is φ = 352791360.

The previous prime is 1164213857. The next prime is 1164213877. The reversal of 1164213864 is 4683124611.

1164213864 is a `hidden beast` number, since 1 + 1 + 642 + 1 + 3 + 8 + 6 + 4 = 666.

It is a super-2 number, since 2×1164213864² = 2710787842259620992, which contains 22 as substring.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242619 + ... + 247370.

It is an arithmetic number, because the mean of its divisors is an integer number (55123875).

Almost surely, 2^1164213864 is an apocalyptic number.

It is an amenable number.

1164213864 is an abundant number, since it is smaller than the sum of its proper divisors (2363714136).

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

1164213864 is a wasteful number, since it uses less digits than its factorization.

1164213864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490015 (or 490005 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1164213864 is about 34120.5783069396. The cubic root of 1164213864 is about 1051.9883303847.

The spelling of 1164213864 in words is "one billion, one hundred sixty-four million, two hundred thirteen thousand, eight hundred sixty-four".