166379481 has 16 divisors (see below), whose sum is σ = 246758400. Its totient is φ = 110798064.

The previous prime is 166379441. The next prime is 166379489. The reversal of 166379481 is 184973661.

It is a happy number.

166379481 is a `hidden beast` number, since 1 + 6 + 637 + 9 + 4 + 8 + 1 = 666.

It is not a de Polignac number, because 166379481 - 2¹⁴ = 166363097 is a prime.

It is a super-2 number, since 2×166379481² = 55364263395658722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (166379489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26515 + ... + 32183.

It is an arithmetic number, because the mean of its divisors is an integer number (15422400).

Almost surely, 2^166379481 is an apocalyptic number.

It is an amenable number.

166379481 is a deficient number, since it is larger than the sum of its proper divisors (80378919).

166379481 is a wasteful number, since it uses less digits than its factorization.

166379481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6765 (or 6759 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 166379481 is about 12898.8170387831. The cubic root of 166379481 is about 550.0049376967.

The spelling of 166379481 in words is "one hundred sixty-six million, three hundred seventy-nine thousand, four hundred eighty-one".