166145044 has 48 divisors (see below), whose sum is σ = 331240000. Its totient is φ = 72285696.

The previous prime is 166145039. The next prime is 166145069. The reversal of 166145044 is 440541661.

It is a junction number, because it is equal to n+sod(n) for n = 166144997 and 166145015.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 332707 + ... + 333205.

Almost surely, 2^166145044 is an apocalyptic number.

It is an amenable number.

166145044 is a deficient number, since it is larger than the sum of its proper divisors (165094956).

166145044 is a wasteful number, since it uses less digits than its factorization.

166145044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 166145044 is about 12889.7262965511. The cubic root of 166145044 is about 549.7464881252.

The spelling of 166145044 in words is "one hundred sixty-six million, one hundred forty-five thousand, forty-four".