166423454 has 16 divisors (see below), whose sum is σ = 254443200. Its totient is φ = 81622944.

The previous prime is 166423441. The next prime is 166423463. The reversal of 166423454 is 454324661.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21452 + ... + 28160.

It is an arithmetic number, because the mean of its divisors is an integer number (15902700).

Almost surely, 2^166423454 is an apocalyptic number.

166423454 is a deficient number, since it is larger than the sum of its proper divisors (88019746).

166423454 is a wasteful number, since it uses less digits than its factorization.

166423454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6947.

The product of its digits is 69120, while the sum is 35.

The square root of 166423454 is about 12900.5214623286. The cubic root of 166423454 is about 550.0533876550.

The spelling of 166423454 in words is "one hundred sixty-six million, four hundred twenty-three thousand, four hundred fifty-four".