164816369 has 4 divisors (see below), whose sum is σ = 164849520. Its totient is φ = 164783220.

The previous prime is 164816363. The next prime is 164816371. The reversal of 164816369 is 963618461.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164816369 is a prime.

It is a super-2 number, since 2×164816369² = 54328870980688322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164816363) 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, 7439 + ... + 19620.

It is an arithmetic number, because the mean of its divisors is an integer number (41212380).

Almost surely, 2^164816369 is an apocalyptic number.

It is an amenable number.

164816369 is a deficient number, since it is larger than the sum of its proper divisors (33151).

164816369 is an equidigital number, since it uses as much as digits as its factorization.

164816369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33150.

The product of its digits is 186624, while the sum is 44.

The square root of 164816369 is about 12838.0827618457. The cubic root of 164816369 is about 548.2771089041.

The spelling of 164816369 in words is "one hundred sixty-four million, eight hundred sixteen thousand, three hundred sixty-nine".