18963418074 has 32 divisors (see below), whose sum is σ = 39607626240. Its totient is φ = 6041449392.

The previous prime is 18963418069. The next prime is 18963418079. The reversal of 18963418074 is 47081436981.

It is an interprime number because it is at equal distance from previous prime (18963418069) and next prime (18963418079).

It is a super-2 number, since 2×18963418074² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18963418079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119169 + ... + 228315.

It is an arithmetic number, because the mean of its divisors is an integer number (1237738320).

Almost surely, 2^18963418074 is an apocalyptic number.

18963418074 is an abundant number, since it is smaller than the sum of its proper divisors (20644208166).

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

18963418074 is a wasteful number, since it uses less digits than its factorization.

18963418074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110434.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 18963418074 in words is "eighteen billion, nine hundred sixty-three million, four hundred eighteen thousand, seventy-four".