1868659984 has 45 divisors (see below), whose sum is σ = 3691224901. Its totient is φ = 916433600.

The previous prime is 1868659967. The next prime is 1868660011. The reversal of 1868659984 is 4899568681.

The square root of 1868659984 is 43228.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1795386384 + 73273600 = 42372^2 + 8560^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17464059 + ... + 17464165.

Almost surely, 2^1868659984 is an apocalyptic number.

1868659984 is the 43228-th square number.

It is an amenable number.

1868659984 is a deficient number, since it is larger than the sum of its proper divisors (1822564917).

1868659984 is an equidigital number, since it uses as much as digits as its factorization.

1868659984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 210 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 64.

The cubic root of 1868659984 is about 1231.7146166722.

Multiplying 1868659984 by its sum of digits (64), we get a square (119594238976 = 345824²).

The spelling of 1868659984 in words is "one billion, eight hundred sixty-eight million, six hundred fifty-nine thousand, nine hundred eighty-four".