921442495386 has 16 divisors (see below), whose sum is σ = 2106154275264. Its totient is φ = 263269284384.

The previous prime is 921442495361. The next prime is 921442495397. The reversal of 921442495386 is 683594244129.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10969553475 + ... + 10969553558.

It is an arithmetic number, because the mean of its divisors is an integer number (131634642204).

Almost surely, 2^921442495386 is an apocalyptic number.

921442495386 is an abundant number, since it is smaller than the sum of its proper divisors (1184711779878).

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

921442495386 is a wasteful number, since it uses less digits than its factorization.

921442495386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21939107045.

The product of its digits is 14929920, while the sum is 57.

The spelling of 921442495386 in words is "nine hundred twenty-one billion, four hundred forty-two million, four hundred ninety-five thousand, three hundred eighty-six".