166387516 has 6 divisors (see below), whose sum is σ = 291178160. Its totient is φ = 83193756.

The previous prime is 166387499. The next prime is 166387523. The reversal of 166387516 is 615783661.

166387516 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20798436 + ... + 20798443.

Almost surely, 2^166387516 is an apocalyptic number.

It is an amenable number.

166387516 is a deficient number, since it is larger than the sum of its proper divisors (124790644).

166387516 is a wasteful number, since it uses less digits than its factorization.

166387516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41596883 (or 41596881 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 166387516 is about 12899.1284976932. The cubic root of 166387516 is about 550.0137913897.

The spelling of 166387516 in words is "one hundred sixty-six million, three hundred eighty-seven thousand, five hundred sixteen".