166746092437 has 4 divisors (see below), whose sum is σ = 166747416160. Its totient is φ = 166744768716.

The previous prime is 166746092399. The next prime is 166746092477. The reversal of 166746092437 is 734290647661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 734290647661 = 61 ⋅12037551601.

It is a cyclic number.

It is not a de Polignac number, because 166746092437 - 2²³ = 166737703829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166746092477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450387 + ... + 732352.

It is an arithmetic number, because the mean of its divisors is an integer number (41686854040).

Almost surely, 2^166746092437 is an apocalyptic number.

It is an amenable number.

166746092437 is a deficient number, since it is larger than the sum of its proper divisors (1323723).

166746092437 is a wasteful number, since it uses less digits than its factorization.

166746092437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323722.

The product of its (nonzero) digits is 9144576, while the sum is 55.

The spelling of 166746092437 in words is "one hundred sixty-six billion, seven hundred forty-six million, ninety-two thousand, four hundred thirty-seven".