164969198213 has 4 divisors (see below), whose sum is σ = 167431425120. Its totient is φ = 162506971308.

The previous prime is 164969198197. The next prime is 164969198237. The reversal of 164969198213 is 312891969461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164969198213 - 2⁴ = 164969198197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164969194213) 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, 1231113353 + ... + 1231113486.

It is an arithmetic number, because the mean of its divisors is an integer number (41857856280).

Almost surely, 2^164969198213 is an apocalyptic number.

It is an amenable number.

164969198213 is a deficient number, since it is larger than the sum of its proper divisors (2462226907).

164969198213 is an equidigital number, since it uses as much as digits as its factorization.

164969198213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462226906.

The product of its digits is 5038848, while the sum is 59.

The spelling of 164969198213 in words is "one hundred sixty-four billion, nine hundred sixty-nine million, one hundred ninety-eight thousand, two hundred thirteen".