381879658 has 16 divisors (see below), whose sum is σ = 591997896. Its totient is φ = 184629760.

The previous prime is 381879623. The next prime is 381879671. The reversal of 381879658 is 856978183.

It can be written as a sum of positive squares in 4 ways, for example, as 253669329 + 128210329 = 15927^2 + 11323^2 .

It is a junction number, because it is equal to n+sod(n) for n = 381879599 and 381879608.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11341 + ... + 29872.

Almost surely, 2^381879658 is an apocalyptic number.

381879658 is a deficient number, since it is larger than the sum of its proper divisors (210118238).

381879658 is a wasteful number, since it uses less digits than its factorization.

381879658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41369.

The product of its digits is 2903040, while the sum is 55.

The square root of 381879658 is about 19541.7414270070. The cubic root of 381879658 is about 725.5079487550.

The spelling of 381879658 in words is "three hundred eighty-one million, eight hundred seventy-nine thousand, six hundred fifty-eight".