166457429 has 4 divisors (see below), whose sum is σ = 170328576. Its totient is φ = 162586284.

The previous prime is 166457411. The next prime is 166457437. The reversal of 166457429 is 924754661.

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: 924754661 = 17 ⋅54397333.

It is a cyclic number.

It is not a de Polignac number, because 166457429 - 2¹² = 166453333 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 166457429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166457449) 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, 1935509 + ... + 1935594.

It is an arithmetic number, because the mean of its divisors is an integer number (42582144).

Almost surely, 2^166457429 is an apocalyptic number.

It is an amenable number.

166457429 is a deficient number, since it is larger than the sum of its proper divisors (3871147).

166457429 is an equidigital number, since it uses as much as digits as its factorization.

166457429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871146.

The product of its digits is 362880, while the sum is 44.

The square root of 166457429 is about 12901.8382023648. The cubic root of 166457429 is about 550.0908158577.

The spelling of 166457429 in words is "one hundred sixty-six million, four hundred fifty-seven thousand, four hundred twenty-nine".