18498590878 has 16 divisors (see below), whose sum is σ = 28647590400. Its totient is φ = 8949490200.

The previous prime is 18498590867. The next prime is 18498590881. The reversal of 18498590878 is 87809589481.

It is a congruent 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, 434173 + ... + 474871.

It is an arithmetic number, because the mean of its divisors is an integer number (1790474400).

Almost surely, 2^18498590878 is an apocalyptic number.

18498590878 is a deficient number, since it is larger than the sum of its proper divisors (10148999522).

18498590878 is a wasteful number, since it uses less digits than its factorization.

18498590878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48063.

The product of its (nonzero) digits is 46448640, while the sum is 67.

The spelling of 18498590878 in words is "eighteen billion, four hundred ninety-eight million, five hundred ninety thousand, eight hundred seventy-eight".