379918221403081 has 3 divisors (see below), whose sum is σ = 379918240894573. Its totient is φ = 379918201911590.

The previous prime is 379918221403043. The next prime is 379918221403093. The reversal of 379918221403081 is 180304122819973.

The square root of 379918221403081 is 19491491.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 379918221403081 - 2⁷ = 379918221402953 is a prime.

It is a super-2 number, since 2×379918221403081² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (379918221403681) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9745746 + ... + 29237236.

Almost surely, 2^{379918221403081} is an apocalyptic number.

379918221403081 is the 19491491-st square number.

379918221403081 is the 9745746-th centered octagonal number.

It is an amenable number.

379918221403081 is a deficient number, since it is larger than the sum of its proper divisors (19491492).

379918221403081 is an frugal number, since it uses more digits than its factorization.

379918221403081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38982982 (or 19491491 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 379918221403081 in words is "three hundred seventy-nine trillion, nine hundred eighteen billion, two hundred twenty-one million, four hundred three thousand, eighty-one".