166444053 has 8 divisors (see below), whose sum is σ = 229084416. Its totient is φ = 107383200.

The previous prime is 166444049. The next prime is 166444063. The reversal of 166444053 is 350444661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166444053 - 2² = 166444049 is a prime.

It is a super-3 number, since 3×166444053³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166444043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 894768 + ... + 894953.

It is an arithmetic number, because the mean of its divisors is an integer number (28635552).

Almost surely, 2^166444053 is an apocalyptic number.

It is an amenable number.

166444053 is a deficient number, since it is larger than the sum of its proper divisors (62640363).

166444053 is a wasteful number, since it uses less digits than its factorization.

166444053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789755.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 166444053 is about 12901.3198162049. The cubic root of 166444053 is about 550.0760809354.

The spelling of 166444053 in words is "one hundred sixty-six million, four hundred forty-four thousand, fifty-three".