381770380 has 12 divisors (see below), whose sum is σ = 801717840. Its totient is φ = 152708144.

The previous prime is 381770359. The next prime is 381770381. The reversal of 381770380 is 83077183.

It is not an unprimeable number, because it can be changed into a prime (381770381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9544240 + ... + 9544279.

It is an arithmetic number, because the mean of its divisors is an integer number (66809820).

Almost surely, 2^381770380 is an apocalyptic number.

It is an amenable number.

381770380 is an abundant number, since it is smaller than the sum of its proper divisors (419947460).

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

381770380 is a wasteful number, since it uses less digits than its factorization.

381770380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19088528 (or 19088526 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 381770380 is about 19538.9452120630. The cubic root of 381770380 is about 725.4387388005.

The spelling of 381770380 in words is "three hundred eighty-one million, seven hundred seventy thousand, three hundred eighty".