166198040 has 16 divisors (see below), whose sum is σ = 373945680. Its totient is φ = 66479200.

The previous prime is 166198033. The next prime is 166198049. The reversal of 166198040 is 40891661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166198049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2077436 + ... + 2077515.

It is an arithmetic number, because the mean of its divisors is an integer number (23371605).

Almost surely, 2^166198040 is an apocalyptic number.

166198040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166198040 is an abundant number, since it is smaller than the sum of its proper divisors (207747640).

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

166198040 is a wasteful number, since it uses less digits than its factorization.

166198040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4154962 (or 4154958 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 166198040 is about 12891.7818783906. The cubic root of 166198040 is about 549.8049335795.

The spelling of 166198040 in words is "one hundred sixty-six million, one hundred ninety-eight thousand, forty".