18354000522 has 64 divisors (see below), whose sum is σ = 43165213056. Its totient is φ = 5129256960.

The previous prime is 18354000499. The next prime is 18354000611. The reversal of 18354000522 is 22500045381.

It is a self number, because there is not a number n which added to its sum of digits gives 18354000522.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 979998 + ... + 998550.

It is an arithmetic number, because the mean of its divisors is an integer number (674456454).

Almost surely, 2^18354000522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18354000522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21582606528).

18354000522 is an abundant number, since it is smaller than the sum of its proper divisors (24811212534).

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

18354000522 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (18354000521) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (19735).

18354000522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19735.

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 18354000522 in words is "eighteen billion, three hundred fifty-four million, five hundred twenty-two", and thus it is an aban number.