166813356 has 48 divisors (see below), whose sum is σ = 403522560. Its totient is φ = 53578560.

The previous prime is 166813351. The next prime is 166813391. The reversal of 166813356 is 653318661.

It is not an unprimeable number, because it can be changed into a prime (166813351) 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, 99235 + ... + 100901.

It is an arithmetic number, because the mean of its divisors is an integer number (8406720).

Almost surely, 2^166813356 is an apocalyptic number.

It is an amenable number.

166813356 is an abundant number, since it is smaller than the sum of its proper divisors (236709204).

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

166813356 is a wasteful number, since it uses less digits than its factorization.

166813356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974 (or 1972 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 166813356 is about 12915.6244912896. The cubic root of 166813356 is about 550.4826133078.

The spelling of 166813356 in words is "one hundred sixty-six million, eight hundred thirteen thousand, three hundred fifty-six".