381168986 has 16 divisors (see below), whose sum is σ = 627183648. Its totient is φ = 172299600.

The previous prime is 381168973. The next prime is 381169003. The reversal of 381168986 is 689861183.

It is a happy number.

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, 43880 + ... + 51843.

It is an arithmetic number, because the mean of its divisors is an integer number (39198978).

Almost surely, 2^381168986 is an apocalyptic number.

381168986 is a deficient number, since it is larger than the sum of its proper divisors (246014662).

381168986 is a wasteful number, since it uses less digits than its factorization.

381168986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95917.

The product of its digits is 497664, while the sum is 50.

The square root of 381168986 is about 19523.5495235882. The cubic root of 381168986 is about 725.0576163485.

The spelling of 381168986 in words is "three hundred eighty-one million, one hundred sixty-eight thousand, nine hundred eighty-six".