18498154506 has 16 divisors (see below), whose sum is σ = 39842179104. Its totient is φ = 5691739824.

The previous prime is 18498154487. The next prime is 18498154511. The reversal of 18498154506 is 60545189481.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118577836 + ... + 118577991.

It is an arithmetic number, because the mean of its divisors is an integer number (2490136194).

Almost surely, 2^18498154506 is an apocalyptic number.

18498154506 is an abundant number, since it is smaller than the sum of its proper divisors (21344024598).

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

18498154506 is a wasteful number, since it uses less digits than its factorization.

18498154506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237155845.

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 18498154506 in words is "eighteen billion, four hundred ninety-eight million, one hundred fifty-four thousand, five hundred six".