1153972868 has 12 divisors (see below), whose sum is σ = 2052558732. Its totient is φ = 567527520.

The previous prime is 1153972817. The next prime is 1153972871. The reversal of 1153972868 is 8682793511.

It can be written as a sum of positive squares in 2 ways, for example, as 324072004 + 829900864 = 18002^2 + 28808^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2364455 + ... + 2364942.

It is an arithmetic number, because the mean of its divisors is an integer number (171046561).

Almost surely, 2^1153972868 is an apocalyptic number.

It is an amenable number.

1153972868 is a deficient number, since it is larger than the sum of its proper divisors (898585864).

1153972868 is a wasteful number, since it uses less digits than its factorization.

1153972868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4729462 (or 4729460 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The square root of 1153972868 is about 33970.1761549745. The cubic root of 1153972868 is about 1048.8946396410.

The spelling of 1153972868 in words is "one billion, one hundred fifty-three million, nine hundred seventy-two thousand, eight hundred sixty-eight".