198609153880 has 16 divisors (see below), whose sum is σ = 446870596320. Its totient is φ = 79443661536.

The previous prime is 198609153871. The next prime is 198609153889. The reversal of 198609153880 is 88351906891.

It is an interprime number because it is at equal distance from previous prime (198609153871) and next prime (198609153889).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198609153889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2482614384 + ... + 2482614463.

It is an arithmetic number, because the mean of its divisors is an integer number (27929412270).

Almost surely, 2^198609153880 is an apocalyptic number.

198609153880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198609153880 is an abundant number, since it is smaller than the sum of its proper divisors (248261442440).

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

198609153880 is a wasteful number, since it uses less digits than its factorization.

198609153880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4965228858 (or 4965228854 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 58.

The spelling of 198609153880 in words is "one hundred ninety-eight billion, six hundred nine million, one hundred fifty-three thousand, eight hundred eighty".