1620422375 has 64 divisors (see below), whose sum is σ = 2391742080. Its totient is φ = 1080576000.

The previous prime is 1620422339. The next prime is 1620422383. The reversal of 1620422375 is 5732240261.

It is not a de Polignac number, because 1620422375 - 2⁶ = 1620422311 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4808207 + ... + 4808543.

It is an arithmetic number, because the mean of its divisors is an integer number (37370970).

Almost surely, 2^1620422375 is an apocalyptic number.

1620422375 is a deficient number, since it is larger than the sum of its proper divisors (771319705).

1620422375 is a wasteful number, since it uses less digits than its factorization.

1620422375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 1620422375 is about 40254.4702486569. The cubic root of 1620422375 is about 1174.5623539886.

The spelling of 1620422375 in words is "one billion, six hundred twenty million, four hundred twenty-two thousand, three hundred seventy-five".