198451396122 has 16 divisors (see below), whose sum is σ = 453603191232. Its totient is φ = 56700398880.

The previous prime is 198451396097. The next prime is 198451396127. The reversal of 198451396122 is 221693154891.

It is not an unprimeable number, because it can be changed into a prime (198451396127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2362516579 + ... + 2362516662.

It is an arithmetic number, because the mean of its divisors is an integer number (28350199452).

Almost surely, 2^198451396122 is an apocalyptic number.

198451396122 is an abundant number, since it is smaller than the sum of its proper divisors (255151795110).

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

198451396122 is a wasteful number, since it uses less digits than its factorization.

198451396122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725033253.

The product of its digits is 933120, while the sum is 51.

The spelling of 198451396122 in words is "one hundred ninety-eight billion, four hundred fifty-one million, three hundred ninety-six thousand, one hundred twenty-two".