1868312512 has 56 divisors (see below), whose sum is σ = 4282409520. Its totient is φ = 799272960.

The previous prime is 1868312489. The next prime is 1868312543. The reversal of 1868312512 is 2152138681.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 66087 + ... + 90022.

Almost surely, 2^1868312512 is an apocalyptic number.

It is an amenable number.

1868312512 is an abundant number, since it is smaller than the sum of its proper divisors (2414097008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1868312512 is a wasteful number, since it uses less digits than its factorization.

1868312512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156149 (or 156139 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 1868312512 is about 43223.9807514301. The cubic root of 1868312512 is about 1231.6382673318.

The spelling of 1868312512 in words is "one billion, eight hundred sixty-eight million, three hundred twelve thousand, five hundred twelve".