381299770 has 16 divisors (see below), whose sum is σ = 691351848. Its totient is φ = 151406080.

The previous prime is 381299701. The next prime is 381299843. The reversal of 381299770 is 77992183.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 366760801 + 14538969 = 19151^2 + 3813^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 381299770.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137791 + ... + 140530.

Almost surely, 2^381299770 is an apocalyptic number.

381299770 is a deficient number, since it is larger than the sum of its proper divisors (310052078).

381299770 is a wasteful number, since it uses less digits than its factorization.

381299770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278465.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 381299770 is about 19526.8986272782. The cubic root of 381299770 is about 725.1405324090.

The spelling of 381299770 in words is "three hundred eighty-one million, two hundred ninety-nine thousand, seven hundred seventy".