381351544 has 16 divisors (see below), whose sum is σ = 817182000. Its totient is φ = 163436352.

The previous prime is 381351499. The next prime is 381351571. The reversal of 381351544 is 445153183.

It is a super-2 number, since 2×381351544² = 290858000222367872, 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 3 ways as a sum of consecutive naturals, for example, 3404869 + ... + 3404980.

It is an arithmetic number, because the mean of its divisors is an integer number (51073875).

Almost surely, 2^381351544 is an apocalyptic number.

It is an amenable number.

381351544 is an abundant number, since it is smaller than the sum of its proper divisors (435830456).

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

381351544 is a wasteful number, since it uses less digits than its factorization.

381351544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6809862 (or 6809858 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 381351544 is about 19528.2242920343. The cubic root of 381351544 is about 725.1733514923.

The spelling of 381351544 in words is "three hundred eighty-one million, three hundred fifty-one thousand, five hundred forty-four".