185385507340 has 48 divisors (see below), whose sum is σ = 435059934624. Its totient is φ = 65768691200.

The previous prime is 185385507323. The next prime is 185385507353. The reversal of 185385507340 is 43705583581.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10267339 + ... + 10285378.

It is an arithmetic number, because the mean of its divisors is an integer number (9063748638).

Almost surely, 2^185385507340 is an apocalyptic number.

185385507340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

185385507340 is an abundant number, since it is smaller than the sum of its proper divisors (249674427284).

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

185385507340 is a wasteful number, since it uses less digits than its factorization.

185385507340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20552778 (or 20552776 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 185385507340 in words is "one hundred eighty-five billion, three hundred eighty-five million, five hundred seven thousand, three hundred forty".