381380591522 has 18 divisors (see below), whose sum is σ = 665480883483. Its totient is φ = 163446204852.

The previous prime is 381380591489. The next prime is 381380591551. The reversal of 381380591522 is 225195083183.

It can be written as a sum of positive squares in only one way, i.e., 190690295761 + 190690295761 = 436681^2 + 436681^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=436681.

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, 6082343 + ... + 6144725.

Almost surely, 2^381380591522 is an apocalyptic number.

381380591522 is a deficient number, since it is larger than the sum of its proper divisors (284100291961).

381380591522 is an frugal number, since it uses more digits than its factorization.

381380591522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124782 (or 62392 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 381380591522 in words is "three hundred eighty-one billion, three hundred eighty million, five hundred ninety-one thousand, five hundred twenty-two".