181840866960 has 40 divisors (see below), whose sum is σ = 563706688320. Its totient is φ = 48490897792.

The previous prime is 181840866937. The next prime is 181840867009. The reversal of 181840866960 is 69668048181.

181840866960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×181840866960² (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 181840866960.

It is an unprimeable number.

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, 378834900 + ... + 378835379.

It is an arithmetic number, because the mean of its divisors is an integer number (14092667208).

Almost surely, 2^181840866960 is an apocalyptic number.

181840866960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181840866960 is an abundant number, since it is smaller than the sum of its proper divisors (381865821360).

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

181840866960 is a wasteful number, since it uses less digits than its factorization.

181840866960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757670295 (or 757670289 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 57.

The spelling of 181840866960 in words is "one hundred eighty-one billion, eight hundred forty million, eight hundred sixty-six thousand, nine hundred sixty".