166074469 has 4 divisors (see below), whose sum is σ = 181172160. Its totient is φ = 150976780.

The previous prime is 166074457. The next prime is 166074499. The reversal of 166074469 is 964470661.

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.

It is a cyclic number.

It is not a de Polignac number, because 166074469 - 2⁵ = 166074437 is a prime.

It is a super-2 number, since 2×166074469² = 55161458507263922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166074499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7548829 + ... + 7548850.

It is an arithmetic number, because the mean of its divisors is an integer number (45293040).

Almost surely, 2^166074469 is an apocalyptic number.

It is an amenable number.

166074469 is a deficient number, since it is larger than the sum of its proper divisors (15097691).

166074469 is a wasteful number, since it uses less digits than its factorization.

166074469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15097690.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 166074469 is about 12886.9883603579. The cubic root of 166074469 is about 549.6686367645.

The spelling of 166074469 in words is "one hundred sixty-six million, seventy-four thousand, four hundred sixty-nine".