18518110146 has 24 divisors (see below), whose sum is σ = 40411229040. Its totient is φ = 6128294616.

The previous prime is 18518110133. The next prime is 18518110147. The reversal of 18518110146 is 64101181581.

18518110146 is a `hidden beast` number, since 18 + 518 + 110 + 14 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18518110146.

It is not an unprimeable number, because it can be changed into a prime (18518110147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3698160 + ... + 3703163.

It is an arithmetic number, because the mean of its divisors is an integer number (1683801210).

Almost surely, 2^18518110146 is an apocalyptic number.

18518110146 is an abundant number, since it is smaller than the sum of its proper divisors (21893118894).

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

18518110146 is a wasteful number, since it uses less digits than its factorization.

18518110146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7401470 (or 7401467 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 36.

The spelling of 18518110146 in words is "eighteen billion, five hundred eighteen million, one hundred ten thousand, one hundred forty-six".