18078222460 has 24 divisors (see below), whose sum is σ = 37999825920. Its totient is φ = 7224515904.

The previous prime is 18078222439. The next prime is 18078222499. The reversal of 18078222460 is 6422287081.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401404 + ... + 444163.

It is an arithmetic number, because the mean of its divisors is an integer number (1583326080).

Almost surely, 2^18078222460 is an apocalyptic number.

18078222460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18078222460 is an abundant number, since it is smaller than the sum of its proper divisors (19921603460).

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

18078222460 is a wasteful number, since it uses less digits than its factorization.

18078222460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846645 (or 846643 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 18078222460 in words is "eighteen billion, seventy-eight million, two hundred twenty-two thousand, four hundred sixty".