1154581164 has 72 divisors (see below), whose sum is σ = 3187770768. Its totient is φ = 349441920.

The previous prime is 1154581157. The next prime is 1154581171. The reversal of 1154581164 is 4611854511.

1154581164 is a `hidden beast` number, since 1 + 15 + 4 + 581 + 1 + 64 = 666.

It is an interprime number because it is at equal distance from previous prime (1154581157) and next prime (1154581171).

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

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, 488674 + ... + 491030.

It is an arithmetic number, because the mean of its divisors is an integer number (44274594).

Almost surely, 2^1154581164 is an apocalyptic number.

It is an amenable number.

1154581164 is an abundant number, since it is smaller than the sum of its proper divisors (2033189604).

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

1154581164 is a wasteful number, since it uses less digits than its factorization.

1154581164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3615 (or 3610 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 1154581164 is about 33979.1283584497. The cubic root of 1154581164 is about 1049.0789092353.

The spelling of 1154581164 in words is "one billion, one hundred fifty-four million, five hundred eighty-one thousand, one hundred sixty-four".