381491046780 has 48 divisors (see below), whose sum is σ = 1068695575584. Its totient is φ = 101681360640.

The previous prime is 381491046779. The next prime is 381491046841. The reversal of 381491046780 is 87640194183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1425331 + ... + 1671690.

It is an arithmetic number, because the mean of its divisors is an integer number (22264491158).

Almost surely, 2^381491046780 is an apocalyptic number.

381491046780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381491046780 is an abundant number, since it is smaller than the sum of its proper divisors (687204528804).

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

381491046780 is a wasteful number, since it uses less digits than its factorization.

381491046780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099086 (or 3099084 counting only the distinct ones).

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

The spelling of 381491046780 in words is "three hundred eighty-one billion, four hundred ninety-one million, forty-six thousand, seven hundred eighty".