1164273840 has 60 divisors (see below), whose sum is σ = 3910022064. Its totient is φ = 310472832.

The previous prime is 1164273839. The next prime is 1164273853. The reversal of 1164273840 is 483724611.

1164273840 is a `hidden beast` number, since 1 + 1 + 642 + 7 + 3 + 8 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 1164273795 and 1164273804.

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 11 ways as a sum of consecutive naturals, for example, 807804 + ... + 809243.

Almost surely, 2^1164273840 is an apocalyptic number.

1164273840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1164273840 is an abundant number, since it is smaller than the sum of its proper divisors (2745748224).

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

1164273840 is a wasteful number, since it uses less digits than its factorization.

1164273840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617066 (or 1617057 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 1164273840 is about 34121.4571787314. The cubic root of 1164273840 is about 1052.0063949261.

The spelling of 1164273840 in words is "one billion, one hundred sixty-four million, two hundred seventy-three thousand, eight hundred forty".