381599431830 has 64 divisors (see below), whose sum is σ = 1021467870720. Its totient is φ = 101372910048.

The previous prime is 381599431781. The next prime is 381599431831. The reversal of 381599431830 is 38134995183.

381599431830 is a `hidden beast` number, since 3 + 8 + 1 + 599 + 4 + 3 + 18 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381599431831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2615932 + ... + 2757951.

It is an arithmetic number, because the mean of its divisors is an integer number (15960435480).

Almost surely, 2^381599431830 is an apocalyptic number.

381599431830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

381599431830 is an abundant number, since it is smaller than the sum of its proper divisors (639868438890).

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

381599431830 is a wasteful number, since it uses less digits than its factorization.

381599431830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5374162 (or 5374156 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 381599431830 in words is "three hundred eighty-one billion, five hundred ninety-nine million, four hundred thirty-one thousand, eight hundred thirty".