166133445 has 16 divisors (see below), whose sum is σ = 269180160. Its totient is φ = 87482304.

The previous prime is 166133419. The next prime is 166133453. The reversal of 166133445 is 544331661.

It is not a de Polignac number, because 166133445 - 2⁵ = 166133413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68914 + ... + 71283.

It is an arithmetic number, because the mean of its divisors is an integer number (16823760).

Almost surely, 2^166133445 is an apocalyptic number.

166133445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166133445 is a deficient number, since it is larger than the sum of its proper divisors (103046715).

166133445 is a wasteful number, since it uses less digits than its factorization.

166133445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140284.

The product of its digits is 25920, while the sum is 33.

The square root of 166133445 is about 12889.2763567238. The cubic root of 166133445 is about 549.7336947696.

The spelling of 166133445 in words is "one hundred sixty-six million, one hundred thirty-three thousand, four hundred forty-five".