164989507919 has 2 divisors, whose sum is σ = 164989507920. Its totient is φ = 164989507918.

The previous prime is 164989507889. The next prime is 164989507931. The reversal of 164989507919 is 919705989461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164989507919 - 2⁸ = 164989507663 is a prime.

It is a super-2 number, since 2×164989507919² (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 (164979507919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82494753959 + 82494753960.

It is an arithmetic number, because the mean of its divisors is an integer number (82494753960).

Almost surely, 2^164989507919 is an apocalyptic number.

164989507919 is a deficient number, since it is larger than the sum of its proper divisors (1).

164989507919 is an equidigital number, since it uses as much as digits as its factorization.

164989507919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44089920, while the sum is 68.

The spelling of 164989507919 in words is "one hundred sixty-four billion, nine hundred eighty-nine million, five hundred seven thousand, nine hundred nineteen".