18227872831757 has 4 divisors (see below), whose sum is σ = 18229066473696. Its totient is φ = 18226679189820.

The previous prime is 18227872831717. The next prime is 18227872831849. The reversal of 18227872831757 is 75713827872281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18227872831757 - 2²⁸ = 18227604396301 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 (18227872831717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596798063 + ... + 596828604.

It is an arithmetic number, because the mean of its divisors is an integer number (4557266618424).

Almost surely, 2^{18227872831757} is an apocalyptic number.

It is an amenable number.

18227872831757 is a deficient number, since it is larger than the sum of its proper divisors (1193641939).

18227872831757 is a wasteful number, since it uses less digits than its factorization.

18227872831757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193641938.

The product of its digits is 147517440, while the sum is 68.

The spelling of 18227872831757 in words is "eighteen trillion, two hundred twenty-seven billion, eight hundred seventy-two million, eight hundred thirty-one thousand, seven hundred fifty-seven".