380818644 has 24 divisors (see below), whose sum is σ = 895577088. Its totient is φ = 125939520.

The previous prime is 380818637. The next prime is 380818657. The reversal of 380818644 is 446818083.

It is a junction number, because it is equal to n+sod(n) for n = 380818596 and 380818605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123417 + ... + 126464.

It is an arithmetic number, because the mean of its divisors is an integer number (37315712).

Almost surely, 2^380818644 is an apocalyptic number.

It is an amenable number.

380818644 is an abundant number, since it is smaller than the sum of its proper divisors (514758444).

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

380818644 is a wasteful number, since it uses less digits than its factorization.

380818644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250015 (or 250013 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 380818644 is about 19514.5751683197. The cubic root of 380818644 is about 724.8354086932.

The spelling of 380818644 in words is "three hundred eighty million, eight hundred eighteen thousand, six hundred forty-four".