164198919613 has 2 divisors, whose sum is σ = 164198919614. Its totient is φ = 164198919612.

The previous prime is 164198919527. The next prime is 164198919653. The reversal of 164198919613 is 316919891461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164088186084 + 110733529 = 405078^2 + 10523^2 .

It is an emirp because it is prime and its reverse (316919891461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164198919613 - 2²⁵ = 164165365181 is a prime.

It is a super-2 number, since 2×164198919613² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164198919653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82099459806 + 82099459807.

It is an arithmetic number, because the mean of its divisors is an integer number (82099459807).

Almost surely, 2^164198919613 is an apocalyptic number.

It is an amenable number.

164198919613 is a deficient number, since it is larger than the sum of its proper divisors (1).

164198919613 is an equidigital number, since it uses as much as digits as its factorization.

164198919613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 58.

The spelling of 164198919613 in words is "one hundred sixty-four billion, one hundred ninety-eight million, nine hundred nineteen thousand, six hundred thirteen".