375661449 has 8 divisors (see below), whose sum is σ = 556535520. Its totient is φ = 250440948.

The previous prime is 375661423. The next prime is 375661457. The reversal of 375661449 is 944166573.

375661449 is a `hidden beast` number, since 37 + 566 + 14 + 49 = 666.

It is not a de Polignac number, because 375661449 - 2⁵ = 375661417 is a prime.

It is a super-2 number, since 2×375661449² = 282243048529559202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (375661849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6956667 + ... + 6956720.

It is an arithmetic number, because the mean of its divisors is an integer number (69566940).

Almost surely, 2^375661449 is an apocalyptic number.

It is an amenable number.

375661449 is a deficient number, since it is larger than the sum of its proper divisors (180874071).

375661449 is a wasteful number, since it uses less digits than its factorization.

375661449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13913396 (or 13913390 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 375661449 is about 19381.9877463587. The cubic root of 375661449 is about 721.5485247943.

The spelling of 375661449 in words is "three hundred seventy-five million, six hundred sixty-one thousand, four hundred forty-nine".