1144925864 has 16 divisors (see below), whose sum is σ = 2259722400. Its totient is φ = 542333232.

The previous prime is 1144925849. The next prime is 1144925909. The reversal of 1144925864 is 4685294411.

It is a super-2 number, since 2×1144925864² = 2621710468112292992, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3766052 + ... + 3766355.

It is an arithmetic number, because the mean of its divisors is an integer number (141232650).

Almost surely, 2^1144925864 is an apocalyptic number.

It is an amenable number.

1144925864 is a deficient number, since it is larger than the sum of its proper divisors (1114796536).

1144925864 is a wasteful number, since it uses less digits than its factorization.

1144925864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7532432 (or 7532428 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 1144925864 is about 33836.7531539301. The cubic root of 1144925864 is about 1046.1463771548.

The spelling of 1144925864 in words is "one billion, one hundred forty-four million, nine hundred twenty-five thousand, eight hundred sixty-four".