181850165020 has 24 divisors (see below), whose sum is σ = 382236712704. Its totient is φ = 72673139136.

The previous prime is 181850165011. The next prime is 181850165059. The reversal of 181850165020 is 20561058181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4160647 + ... + 4204126.

It is an arithmetic number, because the mean of its divisors is an integer number (15926529696).

Almost surely, 2^181850165020 is an apocalyptic number.

181850165020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181850165020 is an abundant number, since it is smaller than the sum of its proper divisors (200386547684).

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

181850165020 is a wasteful number, since it uses less digits than its factorization.

181850165020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8365869 (or 8365867 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 37.

The spelling of 181850165020 in words is "one hundred eighty-one billion, eight hundred fifty million, one hundred sixty-five thousand, twenty".