166537933 has 8 divisors (see below), whose sum is σ = 176456448. Its totient is φ = 156633024.

The previous prime is 166537909. The next prime is 166537951. The reversal of 166537933 is 339735661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166537933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166537933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166535933) 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, 33060 + ... + 37762.

It is an arithmetic number, because the mean of its divisors is an integer number (22057056).

Almost surely, 2^166537933 is an apocalyptic number.

It is an amenable number.

166537933 is a deficient number, since it is larger than the sum of its proper divisors (9918515).

166537933 is a wasteful number, since it uses less digits than its factorization.

166537933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6803.

The product of its digits is 306180, while the sum is 43.

The square root of 166537933 is about 12904.9576907482. The cubic root of 166537933 is about 550.1794819190.

The spelling of 166537933 in words is "one hundred sixty-six million, five hundred thirty-seven thousand, nine hundred thirty-three".