166413949 has 8 divisors (see below), whose sum is σ = 180118400. Its totient is φ = 152838576.

The previous prime is 166413943. The next prime is 166414009. The reversal of 166413949 is 949314661.

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

It is a cyclic number.

It is not a de Polignac number, because 166413949 - 2³ = 166413941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166413941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29577 + ... + 34750.

It is an arithmetic number, because the mean of its divisors is an integer number (22514800).

Almost surely, 2^166413949 is an apocalyptic number.

It is an amenable number.

166413949 is a deficient number, since it is larger than the sum of its proper divisors (13704451).

166413949 is a wasteful number, since it uses less digits than its factorization.

166413949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64539.

The product of its digits is 139968, while the sum is 43.

The square root of 166413949 is about 12900.1530611075. The cubic root of 166413949 is about 550.0429156595.

The spelling of 166413949 in words is "one hundred sixty-six million, four hundred thirteen thousand, nine hundred forty-nine".