185887968874013 has 12 divisors (see below), whose sum is σ = 219781894282812. Its totient is φ = 156720535816320.

The previous prime is 185887968873989. The next prime is 185887968874031. The reversal of 185887968874013 is 310478869788581.

It can be written as a sum of positive squares in 2 ways, for example, as 45801736219204 + 140086232654809 = 6767698^2 + 11835803^2 .

It is not a de Polignac number, because 185887968874013 - 2³² = 185883673906717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185887968879013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31095341420 + ... + 31095347397.

It is an arithmetic number, because the mean of its divisors is an integer number (18315157856901).

Almost surely, 2^{185887968874013} is an apocalyptic number.

It is an amenable number.

185887968874013 is a deficient number, since it is larger than the sum of its proper divisors (33893925408799).

185887968874013 is an equidigital number, since it uses as much as digits as its factorization.

185887968874013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62190688892 (or 62190688885 counting only the distinct ones).

The product of its (nonzero) digits is 5202247680, while the sum is 83.

The spelling of 185887968874013 in words is "one hundred eighty-five trillion, eight hundred eighty-seven billion, nine hundred sixty-eight million, eight hundred seventy-four thousand, thirteen".