361881408 has 56 divisors (see below), whose sum is σ = 1094264512. Its totient is φ = 103394304.

The previous prime is 361881407. The next prime is 361881409. The reversal of 361881408 is 804188163.

It is an interprime number because it is at equal distance from previous prime (361881407) and next prime (361881409).

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361881407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133285 + ... + 135972.

Almost surely, 2^361881408 is an apocalyptic number.

It is an amenable number.

361881408 is an abundant number, since it is smaller than the sum of its proper divisors (732383104).

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

361881408 is a wasteful number, since it uses less digits than its factorization.

361881408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269279 (or 269269 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 361881408 is about 19023.1808065844. The cubic root of 361881408 is about 712.6157615541.

The spelling of 361881408 in words is "three hundred sixty-one million, eight hundred eighty-one thousand, four hundred eight".