164213407 has 4 divisors (see below), whose sum is σ = 165038800. Its totient is φ = 163388016.

The previous prime is 164213383. The next prime is 164213419. The reversal of 164213407 is 704312461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164213407 - 2⁷ = 164213279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164273407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412398 + ... + 412795.

It is an arithmetic number, because the mean of its divisors is an integer number (41259700).

Almost surely, 2^164213407 is an apocalyptic number.

164213407 is the 7399-th hex number.

164213407 is a deficient number, since it is larger than the sum of its proper divisors (825393).

164213407 is an equidigital number, since it uses as much as digits as its factorization.

164213407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825392.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 164213407 is about 12814.5779095529. The cubic root of 164213407 is about 547.6076886925.

Adding to 164213407 its reverse (704312461), we get a palindrome (868525868).

The spelling of 164213407 in words is "one hundred sixty-four million, two hundred thirteen thousand, four hundred seven".