166271913 has 16 divisors (see below), whose sum is σ = 246633600. Its totient is φ = 110710800.

The previous prime is 166271891. The next prime is 166271923. The reversal of 166271913 is 319172661.

166271913 is a `hidden beast` number, since 1 + 6 + 627 + 19 + 13 = 666.

It is not a de Polignac number, because 166271913 - 2⁸ = 166271657 is a prime.

It is a super-3 number, since 3×166271913³ (a number of 26 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) 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 (166271923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21463 + ... + 28163.

It is an arithmetic number, because the mean of its divisors is an integer number (15414600).

Almost surely, 2^166271913 is an apocalyptic number.

It is an amenable number.

166271913 is a deficient number, since it is larger than the sum of its proper divisors (80361687).

166271913 is an equidigital number, since it uses as much as digits as its factorization.

166271913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7629 (or 7623 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 166271913 is about 12894.6466799211. The cubic root of 166271913 is about 549.8863820403.

The spelling of 166271913 in words is "one hundred sixty-six million, two hundred seventy-one thousand, nine hundred thirteen".