166444454 has 12 divisors (see below), whose sum is σ = 274427412. Its totient is φ = 75656460.

The previous prime is 166444429. The next prime is 166444457. The reversal of 166444454 is 454444661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166444457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 343652 + ... + 344135.

It is an arithmetic number, because the mean of its divisors is an integer number (22868951).

Almost surely, 2^166444454 is an apocalyptic number.

166444454 is a deficient number, since it is larger than the sum of its proper divisors (107982958).

166444454 is a wasteful number, since it uses less digits than its factorization.

166444454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687811 (or 687800 counting only the distinct ones).

The product of its digits is 184320, while the sum is 38.

The square root of 166444454 is about 12901.3353572411. The cubic root of 166444454 is about 550.0765226861.

The spelling of 166444454 in words is "one hundred sixty-six million, four hundred forty-four thousand, four hundred fifty-four".