380784646 has 16 divisors (see below), whose sum is σ = 623502288. Its totient is φ = 172972800.

The previous prime is 380784629. The next prime is 380784653. The reversal of 380784646 is 646487083.

It is a junction number, because it is equal to n+sod(n) for n = 380784596 and 380784605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36586 + ... + 45826.

It is an arithmetic number, because the mean of its divisors is an integer number (38968893).

Almost surely, 2^380784646 is an apocalyptic number.

380784646 is a deficient number, since it is larger than the sum of its proper divisors (242717642).

380784646 is a wasteful number, since it uses less digits than its factorization.

380784646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11127.

The product of its (nonzero) digits is 774144, while the sum is 46.

The square root of 380784646 is about 19513.7040563805. The cubic root of 380784646 is about 724.8138378939.

It can be divided in two parts, 38078 and 4646, that added together give a palindrome (42724).

The spelling of 380784646 in words is "three hundred eighty million, seven hundred eighty-four thousand, six hundred forty-six".