180816198 has 32 divisors (see below), whose sum is σ = 381638400. Its totient is φ = 56954016.

The previous prime is 180816173. The next prime is 180816203. The reversal of 180816198 is 891618081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48240 + ... + 51852.

It is an arithmetic number, because the mean of its divisors is an integer number (11926200).

Almost surely, 2^180816198 is an apocalyptic number.

180816198 is an abundant number, since it is smaller than the sum of its proper divisors (200822202).

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

180816198 is a wasteful number, since it uses less digits than its factorization.

180816198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4076.

The product of its (nonzero) digits is 27648, while the sum is 42.

The square root of 180816198 is about 13446.7913644854. The cubic root of 180816198 is about 565.4737436809.

The spelling of 180816198 in words is "one hundred eighty million, eight hundred sixteen thousand, one hundred ninety-eight".