381688268 has 12 divisors (see below), whose sum is σ = 719335680. Its totient is φ = 176163792.

The previous prime is 381688259. The next prime is 381688291. The reversal of 381688268 is 862886183.

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, 3670028 + ... + 3670131.

It is an arithmetic number, because the mean of its divisors is an integer number (59944640).

Almost surely, 2^381688268 is an apocalyptic number.

It is an amenable number.

381688268 is a deficient number, since it is larger than the sum of its proper divisors (337647412).

381688268 is a wasteful number, since it uses less digits than its factorization.

381688268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7340176 (or 7340174 counting only the distinct ones).

The product of its digits is 884736, while the sum is 50.

The square root of 381688268 is about 19536.8438597436. The cubic root of 381688268 is about 725.3867254263.

The spelling of 381688268 in words is "three hundred eighty-one million, six hundred eighty-eight thousand, two hundred sixty-eight".