198971622 has 12 divisors (see below), whose sum is σ = 431105220. Its totient is φ = 66323868.

The previous prime is 198971611. The next prime is 198971623. The reversal of 198971622 is 226179891.

198971622 is a `hidden beast` number, since 19 + 8 + 9 + 7 + 1 + 622 = 666.

198971622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×198971622² = 79179412722621768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198971623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5526972 + ... + 5527007.

It is an arithmetic number, because the mean of its divisors is an integer number (35925435).

Almost surely, 2^198971622 is an apocalyptic number.

198971622 is an abundant number, since it is smaller than the sum of its proper divisors (232133598).

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

198971622 is a wasteful number, since it uses less digits than its factorization.

198971622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11053987 (or 11053984 counting only the distinct ones).

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

The square root of 198971622 is about 14105.7301122629. The cubic root of 198971622 is about 583.7994929203.

The spelling of 198971622 in words is "one hundred ninety-eight million, nine hundred seventy-one thousand, six hundred twenty-two".