164975497619 has 2 divisors, whose sum is σ = 164975497620. Its totient is φ = 164975497618.

The previous prime is 164975497559. The next prime is 164975497693. The reversal of 164975497619 is 916794579461.

It is a weak prime.

It is an emirp because it is prime and its reverse (916794579461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164975497619 - 2⁸ = 164975497363 is a prime.

It is a super-2 number, since 2×164975497619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164975497699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82487748809 + 82487748810.

It is an arithmetic number, because the mean of its divisors is an integer number (82487748810).

Almost surely, 2^164975497619 is an apocalyptic number.

164975497619 is a deficient number, since it is larger than the sum of its proper divisors (1).

164975497619 is an equidigital number, since it uses as much as digits as its factorization.

164975497619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102876480, while the sum is 68.

The spelling of 164975497619 in words is "one hundred sixty-four billion, nine hundred seventy-five million, four hundred ninety-seven thousand, six hundred nineteen".