166888494 has 12 divisors (see below), whose sum is σ = 361591776. Its totient is φ = 55629492.

The previous prime is 166888487. The next prime is 166888499. The reversal of 166888494 is 494888661.

166888494 is a `hidden beast` number, since 16 + 68 + 88 + 494 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 166888494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166888499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4635774 + ... + 4635809.

It is an arithmetic number, because the mean of its divisors is an integer number (30132648).

Almost surely, 2^166888494 is an apocalyptic number.

166888494 is an abundant number, since it is smaller than the sum of its proper divisors (194703282).

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

166888494 is a wasteful number, since it uses less digits than its factorization.

166888494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9271591 (or 9271588 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The square root of 166888494 is about 12918.5329662466. The cubic root of 166888494 is about 550.5652524819.

The spelling of 166888494 in words is "one hundred sixty-six million, eight hundred eighty-eight thousand, four hundred ninety-four".