164322991853 has 4 divisors (see below), whose sum is σ = 164325686688. Its totient is φ = 164320297020.

The previous prime is 164322991841. The next prime is 164322991901. The reversal of 164322991853 is 358199223461.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 358199223461 = 59 ⋅6071173279.

It is a cyclic number.

It is not a de Polignac number, because 164322991853 - 2³⁴ = 147143122669 is a prime.

It is a super-2 number, since 2×164322991853² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164322991795 and 164322991804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164322991753) 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, 1253783 + ... + 1378628.

It is an arithmetic number, because the mean of its divisors is an integer number (41081421672).

Almost surely, 2^164322991853 is an apocalyptic number.

It is an amenable number.

164322991853 is a deficient number, since it is larger than the sum of its proper divisors (2694835).

164322991853 is an equidigital number, since it uses as much as digits as its factorization.

164322991853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694834.

The product of its digits is 2799360, while the sum is 53.

The spelling of 164322991853 in words is "one hundred sixty-four billion, three hundred twenty-two million, nine hundred ninety-one thousand, eight hundred fifty-three".