380691816 has 64 divisors (see below), whose sum is σ = 1011225600. Its totient is φ = 119202048.

The previous prime is 380691803. The next prime is 380691827. The reversal of 380691816 is 618196083.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18361 + ... + 33143.

It is an arithmetic number, because the mean of its divisors is an integer number (15800400).

Almost surely, 2^380691816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 380691816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (505612800).

380691816 is an abundant number, since it is smaller than the sum of its proper divisors (630533784).

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

380691816 is a wasteful number, since it uses less digits than its factorization.

380691816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14858 (or 14854 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 380691816 is about 19511.3253265892. The cubic root of 380691816 is about 724.7549332631.

The spelling of 380691816 in words is "three hundred eighty million, six hundred ninety-one thousand, eight hundred sixteen".