18377012291 has 16 divisors (see below), whose sum is σ = 21958892640. Its totient is φ = 15181447680.

The previous prime is 18377012281. The next prime is 18377012309. The reversal of 18377012291 is 19221077381.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18377012291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18377012231) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1688936 + ... + 1699781.

It is an arithmetic number, because the mean of its divisors is an integer number (1372430790).

Almost surely, 2^18377012291 is an apocalyptic number.

18377012291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18377012291 is a deficient number, since it is larger than the sum of its proper divisors (3581880349).

18377012291 is a wasteful number, since it uses less digits than its factorization.

18377012291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388774.

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 18377012291 in words is "eighteen billion, three hundred seventy-seven million, twelve thousand, two hundred ninety-one".