198761922 has 18 divisors (see below), whose sum is σ = 430780467. Its totient is φ = 66234036.

The previous prime is 198761887. The next prime is 198761923. The reversal of 198761922 is 229167891.

198761922 is a `hidden beast` number, since 1 + 9 + 8 + 7 + 619 + 22 = 666.

It can be written as a sum of positive squares in only one way, i.e., 99380961 + 99380961 = 9969^2 + 9969^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9969.

It is a super-3 number, since 3×198761922³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (198761923) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 58153 + ... + 61475.

Almost surely, 2^198761922 is an apocalyptic number.

198761922 is an abundant number, since it is smaller than the sum of its proper divisors (232018545).

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

198761922 is an frugal number, since it uses more digits than its factorization.

198761922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6654 (or 3328 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 198761922 is about 14098.2950032974. The cubic root of 198761922 is about 583.5943283420.

The spelling of 198761922 in words is "one hundred ninety-eight million, seven hundred sixty-one thousand, nine hundred twenty-two".