1868912456 has 8 divisors (see below), whose sum is σ = 3504210870. Its totient is φ = 934456224.

The previous prime is 1868912431. The next prime is 1868912477. The reversal of 1868912456 is 6542198681.

It can be written as a sum of positive squares in only one way, i.e., 1227100900 + 641811556 = 35030^2 + 25334^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116807021 + ... + 116807036.

Almost surely, 2^1868912456 is an apocalyptic number.

It is an amenable number.

1868912456 is a deficient number, since it is larger than the sum of its proper divisors (1635298414).

1868912456 is a wasteful number, since it uses less digits than its factorization.

1868912456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233614063 (or 233614059 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 1868912456 is about 43230.9201382529. The cubic root of 1868912456 is about 1231.7700859124.

The spelling of 1868912456 in words is "one billion, eight hundred sixty-eight million, nine hundred twelve thousand, four hundred fifty-six".