381168444 has 24 divisors (see below), whose sum is σ = 889799680. Its totient is φ = 126998064.

The previous prime is 381168419. The next prime is 381168451. The reversal of 381168444 is 444861183.

It is a super-2 number, since 2×381168444² = 290578765402762272, which contains 22 as substring.

It is a congruent 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, 26277 + ... + 38115.

Almost surely, 2^381168444 is an apocalyptic number.

It is an amenable number.

381168444 is an abundant number, since it is smaller than the sum of its proper divisors (508631236).

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

381168444 is a wasteful number, since it uses less digits than its factorization.

381168444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14529 (or 14527 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 381168444 is about 19523.5356429106. The cubic root of 381168444 is about 725.0572726852.

The spelling of 381168444 in words is "three hundred eighty-one million, one hundred sixty-eight thousand, four hundred forty-four".