166886492 has 6 divisors (see below), whose sum is σ = 292051368. Its totient is φ = 83443244.

The previous prime is 166886491. The next prime is 166886497. The reversal of 166886492 is 294688661.

It is a happy number.

It is a super-2 number, since 2×166886492² = 55702202424132128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166886492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166886491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20860808 + ... + 20860815.

It is an arithmetic number, because the mean of its divisors is an integer number (48675228).

Almost surely, 2^166886492 is an apocalyptic number.

It is an amenable number.

166886492 is a deficient number, since it is larger than the sum of its proper divisors (125164876).

166886492 is a wasteful number, since it uses less digits than its factorization.

166886492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41721627 (or 41721625 counting only the distinct ones).

The product of its digits is 995328, while the sum is 50.

The square root of 166886492 is about 12918.4554804357. The cubic root of 166886492 is about 550.5630509399.

The spelling of 166886492 in words is "one hundred sixty-six million, eight hundred eighty-six thousand, four hundred ninety-two".