1863664804 has 12 divisors (see below), whose sum is σ = 3272939824. Its totient is φ = 928539144.

The previous prime is 1863664793. The next prime is 1863664807. The reversal of 1863664804 is 4084663681.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1863664807) 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, 822042 + ... + 824305.

Almost surely, 2^1863664804 is an apocalyptic number.

It is an amenable number.

1863664804 is a deficient number, since it is larger than the sum of its proper divisors (1409275020).

1863664804 is a wasteful number, since it uses less digits than its factorization.

1863664804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646634 (or 1646632 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The square root of 1863664804 is about 43170.1842015991. The cubic root of 1863664804 is about 1230.6161242225.

The spelling of 1863664804 in words is "one billion, eight hundred sixty-three million, six hundred sixty-four thousand, eight hundred four".