381717768 has 16 divisors (see below), whose sum is σ = 954294480. Its totient is φ = 127239248.

The previous prime is 381717767. The next prime is 381717773. The reversal of 381717768 is 867717183.

381717768 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (381717767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7952430 + ... + 7952477.

It is an arithmetic number, because the mean of its divisors is an integer number (59643405).

Almost surely, 2^381717768 is an apocalyptic number.

It is an amenable number.

381717768 is an abundant number, since it is smaller than the sum of its proper divisors (572576712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381717768 is a wasteful number, since it uses less digits than its factorization.

381717768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15904916 (or 15904912 counting only the distinct ones).

The product of its digits is 395136, while the sum is 48.

The square root of 381717768 is about 19537.5988289247. The cubic root of 381717768 is about 725.4054128902.

The spelling of 381717768 in words is "three hundred eighty-one million, seven hundred seventeen thousand, seven hundred sixty-eight".