381587180 has 48 divisors (see below), whose sum is σ = 864454080. Its totient is φ = 140652288.

The previous prime is 381587137. The next prime is 381587183. The reversal of 381587180 is 81785183.

It is not an unprimeable number, because it can be changed into a prime (381587183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238142 + ... + 239738.

It is an arithmetic number, because the mean of its divisors is an integer number (18009460).

Almost surely, 2^381587180 is an apocalyptic number.

It is an amenable number.

381587180 is an abundant number, since it is smaller than the sum of its proper divisors (482866900).

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

381587180 is a wasteful number, since it uses less digits than its factorization.

381587180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538 (or 2536 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 41.

The square root of 381587180 is about 19534.2565765887. The cubic root of 381587180 is about 725.3226815683.

The spelling of 381587180 in words is "three hundred eighty-one million, five hundred eighty-seven thousand, one hundred eighty".