381599930 has 8 divisors (see below), whose sum is σ = 686879892. Its totient is φ = 152639968.

The previous prime is 381599921. The next prime is 381599963. The reversal of 381599930 is 39995183.

It can be written as a sum of positive squares in 2 ways, for example, as 381381841 + 218089 = 19529^2 + 467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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, 19079987 + ... + 19080006.

Almost surely, 2^381599930 is an apocalyptic number.

381599930 is a deficient number, since it is larger than the sum of its proper divisors (305279962).

381599930 is a wasteful number, since it uses less digits than its factorization.

381599930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38160000.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 381599930 is about 19534.5829236255. The cubic root of 381599930 is about 725.3307598980.

The spelling of 381599930 in words is "three hundred eighty-one million, five hundred ninety-nine thousand, nine hundred thirty".