166204413 has 16 divisors (see below), whose sum is σ = 246628800. Its totient is φ = 110622960.

The previous prime is 166204403. The next prime is 166204433. The reversal of 166204413 is 314402661.

It is not a de Polignac number, because 166204413 - 2⁶ = 166204349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166204403) 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, 13123 + ... + 22463.

It is an arithmetic number, because the mean of its divisors is an integer number (15414300).

Almost surely, 2^166204413 is an apocalyptic number.

It is an amenable number.

166204413 is a deficient number, since it is larger than the sum of its proper divisors (80424387).

166204413 is an equidigital number, since it uses as much as digits as its factorization.

166204413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10009 (or 10003 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 166204413 is about 12892.0290489899. The cubic root of 166204413 is about 549.8119610632.

The spelling of 166204413 in words is "one hundred sixty-six million, two hundred four thousand, four hundred thirteen".