1617923955 has 16 divisors (see below), whose sum is σ = 2594353824. Its totient is φ = 861000960.

The previous prime is 1617923953. The next prime is 1617923959. The reversal of 1617923955 is 5593297161.

It is not a de Polignac number, because 1617923955 - 2¹ = 1617923953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1617923953) 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, 111156 + ... + 124865.

It is an arithmetic number, because the mean of its divisors is an integer number (162147114).

Almost surely, 2^1617923955 is an apocalyptic number.

1617923955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1617923955 is a deficient number, since it is larger than the sum of its proper divisors (976429869).

1617923955 is a wasteful number, since it uses less digits than its factorization.

1617923955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236486.

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

The square root of 1617923955 is about 40223.4254508489. The cubic root of 1617923955 is about 1173.9583839764.

The spelling of 1617923955 in words is "one billion, six hundred seventeen million, nine hundred twenty-three thousand, nine hundred fifty-five".