1953165728 has 48 divisors (see below), whose sum is σ = 3887432640. Its totient is φ = 965938176.

The previous prime is 1953165703. The next prime is 1953165769. The reversal of 1953165728 is 8275613591.

It is a super-2 number, since 2×1953165728² = 7629712722067539968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498325 + ... + 1499627.

It is an arithmetic number, because the mean of its divisors is an integer number (80988180).

Almost surely, 2^1953165728 is an apocalyptic number.

It is an amenable number.

1953165728 is a deficient number, since it is larger than the sum of its proper divisors (1934266912).

1953165728 is a wasteful number, since it uses less digits than its factorization.

1953165728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789 (or 1781 counting only the distinct ones).

The product of its digits is 453600, while the sum is 47.

The square root of 1953165728 is about 44194.6346064768. The cubic root of 1953165728 is about 1250.0086885796.

The spelling of 1953165728 in words is "one billion, nine hundred fifty-three million, one hundred sixty-five thousand, seven hundred twenty-eight".