164220453 has 20 divisors (see below), whose sum is σ = 245966380. Its totient is φ = 109190592.

The previous prime is 164220449. The next prime is 164220487. The reversal of 164220453 is 354022461.

164220453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 145009764 + 19210689 = 12042^2 + 4383^2 .

It is not a de Polignac number, because 164220453 - 2² = 164220449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164200453) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30651 + ... + 35607.

It is an arithmetic number, because the mean of its divisors is an integer number (12298319).

Almost surely, 2^164220453 is an apocalyptic number.

It is an amenable number.

164220453 is a deficient number, since it is larger than the sum of its proper divisors (81745927).

164220453 is an equidigital number, since it uses as much as digits as its factorization.

164220453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5378 (or 5369 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 164220453 is about 12814.8528278713. The cubic root of 164220453 is about 547.6155207542.

The spelling of 164220453 in words is "one hundred sixty-four million, two hundred twenty thousand, four hundred fifty-three".