381155594884 has 27 divisors (see below), whose sum is σ = 683778747631. Its totient is φ = 185904863360.

The previous prime is 381155594879. The next prime is 381155594903. The reversal of 381155594884 is 488495551183.

It is a happy number.

The square root of 381155594884 is 617378.

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

It can be written as a sum of positive squares in 4 ways, for example, as 172123754884 + 209031840000 = 414878^2 + 457200^2 .

It is a super-2 number, since 2×381155594884² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 50621232 + ... + 50628760.

Almost surely, 2^381155594884 is an apocalyptic number.

381155594884 is the 617378-th square number.

It is an amenable number.

381155594884 is a deficient number, since it is larger than the sum of its proper divisors (302623152747).

381155594884 is an frugal number, since it uses more digits than its factorization.

381155594884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15144 (or 7572 counting only the distinct ones).

The product of its digits is 27648000, while the sum is 61.

The spelling of 381155594884 in words is "three hundred eighty-one billion, one hundred fifty-five million, five hundred ninety-four thousand, eight hundred eighty-four".