166461995 has 16 divisors (see below), whose sum is σ = 230316480. Its totient is φ = 113132544.

The previous prime is 166461979. The next prime is 166462007. The reversal of 166461995 is 599164661.

It is a happy number.

It is not a de Polignac number, because 166461995 - 2⁴ = 166461979 is a prime.

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, 17090 + ... + 24999.

It is an arithmetic number, because the mean of its divisors is an integer number (14394780).

Almost surely, 2^166461995 is an apocalyptic number.

166461995 is a deficient number, since it is larger than the sum of its proper divisors (63854485).

166461995 is a wasteful number, since it uses less digits than its factorization.

166461995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42214.

The product of its digits is 349920, while the sum is 47.

The square root of 166461995 is about 12902.0151526806. The cubic root of 166461995 is about 550.0958455555.

The spelling of 166461995 in words is "one hundred sixty-six million, four hundred sixty-one thousand, nine hundred ninety-five".