185919474130 has 32 divisors (see below), whose sum is σ = 360424545264. Its totient is φ = 68642086656.

The previous prime is 185919474043. The next prime is 185919474149. The reversal of 185919474130 is 31474919581.

It can be written as a sum of positive squares in 8 ways, for example, as 15673287249 + 170246186881 = 125193^2 + 412609^2 .

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 15 ways as a sum of consecutive naturals, for example, 2008344 + ... + 2098876.

Almost surely, 2^185919474130 is an apocalyptic number.

185919474130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

185919474130 is a deficient number, since it is larger than the sum of its proper divisors (174505071134).

185919474130 is a wasteful number, since it uses less digits than its factorization.

185919474130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106350.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 185919474130 in words is "one hundred eighty-five billion, nine hundred nineteen million, four hundred seventy-four thousand, one hundred thirty".