381399038 has 4 divisors (see below), whose sum is σ = 572098560. Its totient is φ = 190699518.

The previous prime is 381399019. The next prime is 381399047. The reversal of 381399038 is 830993183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 830993183 = 499 ⋅1665317.

It is a self number, because there is not a number n which added to its sum of digits gives 381399038.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95349758 + ... + 95349761.

It is an arithmetic number, because the mean of its divisors is an integer number (143024640).

Almost surely, 2^381399038 is an apocalyptic number.

381399038 is a deficient number, since it is larger than the sum of its proper divisors (190699522).

381399038 is a wasteful number, since it uses less digits than its factorization.

381399038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190699521.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 381399038 is about 19529.4402889586. The cubic root of 381399038 is about 725.2034549091.

The spelling of 381399038 in words is "three hundred eighty-one million, three hundred ninety-nine thousand, thirty-eight".