166481493 has 8 divisors (see below), whose sum is σ = 235032768. Its totient is φ = 104458944.

The previous prime is 166481467. The next prime is 166481543. The reversal of 166481493 is 394184661.

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

It is not a de Polignac number, because 166481493 - 2⁵ = 166481461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166481453) 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, 1632121 + ... + 1632222.

It is an arithmetic number, because the mean of its divisors is an integer number (29379096).

Almost surely, 2^166481493 is an apocalyptic number.

It is an amenable number.

166481493 is a deficient number, since it is larger than the sum of its proper divisors (68551275).

166481493 is a wasteful number, since it uses less digits than its factorization.

166481493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264363.

The product of its digits is 124416, while the sum is 42.

The square root of 166481493 is about 12902.7707489516. The cubic root of 166481493 is about 550.1173226301.

The spelling of 166481493 in words is "one hundred sixty-six million, four hundred eighty-one thousand, four hundred ninety-three".