198613197220 has 24 divisors (see below), whose sum is σ = 418958072064. Its totient is φ = 79089020256.

The previous prime is 198613197197. The next prime is 198613197283. The reversal of 198613197220 is 22791316891.

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, 22261594 + ... + 22270513.

It is an arithmetic number, because the mean of its divisors is an integer number (17456586336).

Almost surely, 2^198613197220 is an apocalyptic number.

198613197220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198613197220 is an abundant number, since it is smaller than the sum of its proper divisors (220344874844).

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

198613197220 is a wasteful number, since it uses less digits than its factorization.

198613197220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44532339 (or 44532337 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 198613197220 in words is "one hundred ninety-eight billion, six hundred thirteen million, one hundred ninety-seven thousand, two hundred twenty".