18612090852 has 24 divisors (see below), whose sum is σ = 43455181056. Its totient is φ = 6200177568.

The previous prime is 18612090829. The next prime is 18612090857. The reversal of 18612090852 is 25809021681.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18612090857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461428 + ... + 500139.

It is an arithmetic number, because the mean of its divisors is an integer number (1810632544).

Almost surely, 2^18612090852 is an apocalyptic number.

18612090852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18612090852 is an abundant number, since it is smaller than the sum of its proper divisors (24843090204).

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

18612090852 is a wasteful number, since it uses less digits than its factorization.

18612090852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963187 (or 963185 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 18612090852 in words is "eighteen billion, six hundred twelve million, ninety thousand, eight hundred fifty-two".