381351560 has 16 divisors (see below), whose sum is σ = 858041100. Its totient is φ = 152540608.

The previous prime is 381351499. The next prime is 381351571. The reversal of 381351560 is 65153183.

It can be written as a sum of positive squares in 2 ways, for example, as 354870244 + 26481316 = 18838^2 + 5146^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4766855 + ... + 4766934.

Almost surely, 2^381351560 is an apocalyptic number.

It is an amenable number.

381351560 is an abundant number, since it is smaller than the sum of its proper divisors (476689540).

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

381351560 is a wasteful number, since it uses less digits than its factorization.

381351560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533800 (or 9533796 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 381351560 is about 19528.2247016978. The cubic root of 381351560 is about 725.1733616341.

The spelling of 381351560 in words is "three hundred eighty-one million, three hundred fifty-one thousand, five hundred sixty".