381379930 has 16 divisors (see below), whose sum is σ = 697738824. Its totient is φ = 150050880.

The previous prime is 381379919. The next prime is 381379969. The reversal of 381379930 is 39973183.

It can be written as a sum of positive squares in 4 ways, for example, as 286726489 + 94653441 = 16933^2 + 9729^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311997 + ... + 313216.

Almost surely, 2^381379930 is an apocalyptic number.

381379930 is a deficient number, since it is larger than the sum of its proper divisors (316358894).

381379930 is a wasteful number, since it uses less digits than its factorization.

381379930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625281.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 381379930 is about 19528.9510727023. The cubic root of 381379930 is about 725.1913438674.

The spelling of 381379930 in words is "three hundred eighty-one million, three hundred seventy-nine thousand, nine hundred thirty".