1163610864 has 120 divisors (see below), whose sum is σ = 3549720720. Its totient is φ = 353673216.

The previous prime is 1163610841. The next prime is 1163610887. The reversal of 1163610864 is 4680163611.

1163610864 is a `hidden beast` number, since 1 + 1 + 636 + 10 + 8 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1163610841) and next prime (1163610887).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151632 + ... + 159120.

It is an arithmetic number, because the mean of its divisors is an integer number (29581006).

Almost surely, 2^1163610864 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 1163610864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1774860360).

1163610864 is an abundant number, since it is smaller than the sum of its proper divisors (2386109856).

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

1163610864 is a wasteful number, since it uses less digits than its factorization.

1163610864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7599 (or 7590 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1163610864 is about 34111.7408526742. The cubic root of 1163610864 is about 1051.8066746100.

It can be divided in two parts, 11636 and 10864, that added together give a square (22500 = 150²).

The spelling of 1163610864 in words is "one billion, one hundred sixty-three million, six hundred ten thousand, eight hundred sixty-four".