198969190 has 64 divisors (see below), whose sum is σ = 440650368. Its totient is φ = 63129600.

The previous prime is 198969167. The next prime is 198969209. The reversal of 198969190 is 91969891.

It is a super-2 number, since 2×198969190² = 79177477138512200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71220 + ... + 73960.

It is an arithmetic number, because the mean of its divisors is an integer number (6885162).

Almost surely, 2^198969190 is an apocalyptic number.

198969190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198969190 is an abundant number, since it is smaller than the sum of its proper divisors (241681178).

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

198969190 is a wasteful number, since it uses less digits than its factorization.

198969190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833.

The product of its (nonzero) digits is 314928, while the sum is 52.

The square root of 198969190 is about 14105.6439058981. The cubic root of 198969190 is about 583.7971143463.

The spelling of 198969190 in words is "one hundred ninety-eight million, nine hundred sixty-nine thousand, one hundred ninety".