166133898 has 48 divisors (see below), whose sum is σ = 424659456. Its totient is φ = 45934560.

The previous prime is 166133857. The next prime is 166133917. The reversal of 166133898 is 898331661.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17361 + ... + 25172.

It is an arithmetic number, because the mean of its divisors is an integer number (8847072).

Almost surely, 2^166133898 is an apocalyptic number.

166133898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

166133898 is an abundant number, since it is smaller than the sum of its proper divisors (258525558).

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

166133898 is a wasteful number, since it uses less digits than its factorization.

166133898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42579 (or 42576 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 166133898 is about 12889.2939294594. The cubic root of 166133898 is about 549.7341944264.

The spelling of 166133898 in words is "one hundred sixty-six million, one hundred thirty-three thousand, eight hundred ninety-eight".