1623923940 has 24 divisors (see below), whose sum is σ = 4546987200. Its totient is φ = 433046368.

The previous prime is 1623923923. The next prime is 1623923989. The reversal of 1623923940 is 493293261.

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, 13532640 + ... + 13532759.

It is an arithmetic number, because the mean of its divisors is an integer number (189457800).

Almost surely, 2^1623923940 is an apocalyptic number.

1623923940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1623923940 is an abundant number, since it is smaller than the sum of its proper divisors (2923063260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1623923940 is a wasteful number, since it uses less digits than its factorization.

1623923940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27065411 (or 27065409 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 1623923940 is about 40297.9396495652. The cubic root of 1623923940 is about 1175.4077812043.

The spelling of 1623923940 in words is "one billion, six hundred twenty-three million, nine hundred twenty-three thousand, nine hundred forty".