166118388 has 24 divisors (see below), whose sum is σ = 397064640. Its totient is φ = 54022080.

The previous prime is 166118371. The next prime is 166118389. The reversal of 166118388 is 883811661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166118389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168328 + ... + 169311.

It is an arithmetic number, because the mean of its divisors is an integer number (16544360).

Almost surely, 2^166118388 is an apocalyptic number.

It is an amenable number.

166118388 is an abundant number, since it is smaller than the sum of its proper divisors (230946252).

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

166118388 is a wasteful number, since it uses less digits than its factorization.

166118388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337687 (or 337685 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 166118388 is about 12888.6922532893. The cubic root of 166118388 is about 549.7170864535.

The spelling of 166118388 in words is "one hundred sixty-six million, one hundred eighteen thousand, three hundred eighty-eight".