198641967 has 16 divisors (see below), whose sum is σ = 278640000. Its totient is φ = 125691104.

The previous prime is 198641939. The next prime is 198641977. The reversal of 198641967 is 769146891.

It is a happy number.

It is not a de Polignac number, because 198641967 - 2¹² = 198637871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198641977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14217 + ... + 24482.

It is an arithmetic number, because the mean of its divisors is an integer number (17415000).

Almost surely, 2^198641967 is an apocalyptic number.

198641967 is a deficient number, since it is larger than the sum of its proper divisors (79998033).

198641967 is a wasteful number, since it uses less digits than its factorization.

198641967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38790.

The product of its digits is 653184, while the sum is 51.

The square root of 198641967 is about 14094.0401233997. The cubic root of 198641967 is about 583.4769028569.

The spelling of 198641967 in words is "one hundred ninety-eight million, six hundred forty-one thousand, nine hundred sixty-seven".