164689413 has 16 divisors (see below), whose sum is σ = 253545600. Its totient is φ = 93136896.

The previous prime is 164689411. The next prime is 164689423. The reversal of 164689413 is 314986461.

It is not a de Polignac number, because 164689413 - 2¹ = 164689411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164689411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38388 + ... + 42461.

It is an arithmetic number, because the mean of its divisors is an integer number (15846600).

Almost surely, 2^164689413 is an apocalyptic number.

It is an amenable number.

164689413 is a deficient number, since it is larger than the sum of its proper divisors (88856187).

164689413 is an equidigital number, since it uses as much as digits as its factorization.

164689413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80956.

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

The square root of 164689413 is about 12833.1373015331. The cubic root of 164689413 is about 548.1362957288.

The spelling of 164689413 in words is "one hundred sixty-four million, six hundred eighty-nine thousand, four hundred thirteen".