164872369 has 2 divisors, whose sum is σ = 164872370. Its totient is φ = 164872368.

The previous prime is 164872361. The next prime is 164872387. The reversal of 164872369 is 963278461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146724769 + 18147600 = 12113^2 + 4260^2 .

It is a cyclic number.

It is not a de Polignac number, because 164872369 - 2³ = 164872361 is a prime.

It is a super-2 number, since 2×164872369² = 54365796119344322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164872361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82436184 + 82436185.

It is an arithmetic number, because the mean of its divisors is an integer number (82436185).

Almost surely, 2^164872369 is an apocalyptic number.

It is an amenable number.

164872369 is a deficient number, since it is larger than the sum of its proper divisors (1).

164872369 is an equidigital number, since it uses as much as digits as its factorization.

164872369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 164872369 is about 12840.2635876371. The cubic root of 164872369 is about 548.3391982899.

The spelling of 164872369 in words is "one hundred sixty-four million, eight hundred seventy-two thousand, three hundred sixty-nine".