18916294923901 has 16 divisors (see below), whose sum is σ = 21219700838400. Its totient is φ = 16776825938928.

The previous prime is 18916294923881. The next prime is 18916294923913. The reversal of 18916294923901 is 10932949261981.

It is not a de Polignac number, because 18916294923901 - 2²⁵ = 18916261369469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18916294923301) 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, 460476441 + ... + 460517518.

It is an arithmetic number, because the mean of its divisors is an integer number (1326231302400).

Almost surely, 2^{18916294923901} is an apocalyptic number.

It is an amenable number.

18916294923901 is a deficient number, since it is larger than the sum of its proper divisors (2303405914499).

18916294923901 is a wasteful number, since it uses less digits than its factorization.

18916294923901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920994048.

The product of its (nonzero) digits is 15116544, while the sum is 64.

The spelling of 18916294923901 in words is "eighteen trillion, nine hundred sixteen billion, two hundred ninety-four million, nine hundred twenty-three thousand, nine hundred one".