1620250972 has 12 divisors (see below), whose sum is σ = 2835846216. Its totient is φ = 810009200.

The previous prime is 1620250903. The next prime is 1620251033. The reversal of 1620250972 is 2790520261.

It is a congruent number.

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, 7347 + ... + 57397.

It is an arithmetic number, because the mean of its divisors is an integer number (236320518).

Almost surely, 2^1620250972 is an apocalyptic number.

It is an amenable number.

1620250972 is a deficient number, since it is larger than the sum of its proper divisors (1215595244).

1620250972 is a wasteful number, since it uses less digits than its factorization.

1620250972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58148 (or 58146 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1620250972 is about 40252.3411989911. The cubic root of 1620250972 is about 1174.5209387351.

The spelling of 1620250972 in words is "one billion, six hundred twenty million, two hundred fifty thousand, nine hundred seventy-two".