18185095812 has 48 divisors (see below), whose sum is σ = 46930920512. Its totient is φ = 5444184960.

The previous prime is 18185095781. The next prime is 18185095867. The reversal of 18185095812 is 21859058181.

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, 1569514 + ... + 1581057.

Almost surely, 2^18185095812 is an apocalyptic number.

18185095812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18185095812 is an abundant number, since it is smaller than the sum of its proper divisors (28745824700).

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

18185095812 is a wasteful number, since it uses less digits than its factorization.

18185095812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150628 (or 3150626 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 48.

The spelling of 18185095812 in words is "eighteen billion, one hundred eighty-five million, ninety-five thousand, eight hundred twelve".