3681904066 has 8 divisors (see below), whose sum is σ = 5598511884. Its totient is φ = 1815733440.

The previous prime is 3681904049. The next prime is 3681904073. The reversal of 3681904066 is 6604091863.

It can be written as a sum of positive squares in 2 ways, for example, as 3592204225 + 89699841 = 59935^2 + 9471^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 12609115 + ... + 12609406.

Almost surely, 2^3681904066 is an apocalyptic number.

3681904066 is a deficient number, since it is larger than the sum of its proper divisors (1916607818).

3681904066 is a wasteful number, since it uses less digits than its factorization.

3681904066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25218596.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 3681904066 is about 60678.6953221639. The cubic root of 3681904066 is about 1544.1547540238.

The spelling of 3681904066 in words is "three billion, six hundred eighty-one million, nine hundred four thousand, sixty-six".