1915972 has 24 divisors (see below), whose sum is σ = 3528000. Its totient is φ = 909216.

The previous prime is 1915961. The next prime is 1915981. The reversal of 1915972 is 2795191.

It is a magnanimous number.

Its product of digits (5670) is a multiple of the sum of its prime factors (315).

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, 9529 + ... + 9727.

It is an arithmetic number, because the mean of its divisors is an integer number (147000).

2^1915972 is an apocalyptic number.

It is an amenable number.

1915972 is a deficient number, since it is larger than the sum of its proper divisors (1612028).

1915972 is a wasteful number, since it uses less digits than its factorization.

1915972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 313 counting only the distinct ones).

The product of its digits is 5670, while the sum is 34.

The square root of 1915972 is about 1384.1864036321. The cubic root of 1915972 is about 124.2023231881.

The spelling of 1915972 in words is "one million, nine hundred fifteen thousand, nine hundred seventy-two".