166198512 has 20 divisors (see below), whose sum is σ = 429346280. Its totient is φ = 55399488.

The previous prime is 166198469. The next prime is 166198517. The reversal of 166198512 is 215891661.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166198517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1731187 + ... + 1731282.

It is an arithmetic number, because the mean of its divisors is an integer number (21467314).

Almost surely, 2^166198512 is an apocalyptic number.

166198512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166198512 is an abundant number, since it is smaller than the sum of its proper divisors (263147768).

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

166198512 is a wasteful number, since it uses less digits than its factorization.

166198512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462480 (or 3462474 counting only the distinct ones).

The product of its digits is 25920, while the sum is 39.

The square root of 166198512 is about 12891.8001846135. The cubic root of 166198512 is about 549.8054540584.

The spelling of 166198512 in words is "one hundred sixty-six million, one hundred ninety-eight thousand, five hundred twelve".