1655917923 has 16 divisors (see below), whose sum is σ = 2409321600. Its totient is φ = 1003289280.

The previous prime is 1655917889. The next prime is 1655917937. The reversal of 1655917923 is 3297195561.

1655917923 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1655917923 - 2⁸ = 1655917667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1655913923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166063 + ... + 175751.

It is an arithmetic number, because the mean of its divisors is an integer number (150582600).

Almost surely, 2^1655917923 is an apocalyptic number.

1655917923 is a deficient number, since it is larger than the sum of its proper divisors (753403677).

1655917923 is a wasteful number, since it uses less digits than its factorization.

1655917923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14882.

The product of its digits is 510300, while the sum is 48.

The square root of 1655917923 is about 40692.9714201359. The cubic root of 1655917923 is about 1183.0767935225.

The spelling of 1655917923 in words is "one billion, six hundred fifty-five million, nine hundred seventeen thousand, nine hundred twenty-three".