185718620842 has 16 divisors (see below), whose sum is σ = 285090376032. Its totient is φ = 90689009040.

The previous prime is 185718620831. The next prime is 185718620849. The reversal of 185718620842 is 248026817581.

185718620842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×185718620842² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 185718620842.

It is not an unprimeable number, because it can be changed into a prime (185718620849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624792 + ... + 872812.

It is an arithmetic number, because the mean of its divisors is an integer number (17818148502).

Almost surely, 2^185718620842 is an apocalyptic number.

185718620842 is a deficient number, since it is larger than the sum of its proper divisors (99371755190).

185718620842 is a wasteful number, since it uses less digits than its factorization.

185718620842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256773.

The product of its (nonzero) digits is 1720320, while the sum is 52.

The spelling of 185718620842 in words is "one hundred eighty-five billion, seven hundred eighteen million, six hundred twenty thousand, eight hundred forty-two".