381733444 has 9 divisors (see below), whose sum is σ = 668101917. Its totient is φ = 190847184.

The previous prime is 381733421. The next prime is 381733447. The reversal of 381733444 is 444337183.

The square root of 381733444 is 19538.

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

It can be written as a sum of positive squares in only one way, i.e., 130827844 + 250905600 = 11438^2 + 15840^2 .

It is a super-2 number, since 2×381733444² = 291440844536202272, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381733447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 34192 + ... + 43960.

Almost surely, 2^381733444 is an apocalyptic number.

381733444 is the 19538-th square number.

It is an amenable number.

381733444 is a deficient number, since it is larger than the sum of its proper divisors (286368473).

381733444 is an frugal number, since it uses more digits than its factorization.

381733444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19542 (or 9771 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The cubic root of 381733444 is about 725.4153428267.

The spelling of 381733444 in words is "three hundred eighty-one million, seven hundred thirty-three thousand, four hundred forty-four".