166849995 has 16 divisors (see below), whose sum is σ = 287495712. Its totient is φ = 82141440.

The previous prime is 166849993. The next prime is 166849999. The reversal of 166849995 is 599948661.

It is not a de Polignac number, because 166849995 - 2¹ = 166849993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166849993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427626 + ... + 428015.

It is an arithmetic number, because the mean of its divisors is an integer number (17968482).

Almost surely, 2^166849995 is an apocalyptic number.

166849995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166849995 is a deficient number, since it is larger than the sum of its proper divisors (120645717).

166849995 is a wasteful number, since it uses less digits than its factorization.

166849995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855662.

The product of its digits is 4199040, while the sum is 57.

The square root of 166849995 is about 12917.0428117275. The cubic root of 166849995 is about 550.5229131505.

The spelling of 166849995 in words is "one hundred sixty-six million, eight hundred forty-nine thousand, nine hundred ninety-five".