381669975 has 60 divisors (see below), whose sum is σ = 748639584. Its totient is φ = 191566080.

The previous prime is 381669973. The next prime is 381669979. The reversal of 381669975 is 579966183.

It is not a de Polignac number, because 381669975 - 2¹ = 381669973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381669971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 28882 + ... + 39968.

Almost surely, 2^381669975 is an apocalyptic number.

381669975 is a deficient number, since it is larger than the sum of its proper divisors (366969609).

381669975 is a wasteful number, since it uses less digits than its factorization.

381669975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11126 (or 11112 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 381669975 is about 19536.3756874196. The cubic root of 381669975 is about 725.3751368147.

The spelling of 381669975 in words is "three hundred eighty-one million, six hundred sixty-nine thousand, nine hundred seventy-five".