164210457 has 4 divisors (see below), whose sum is σ = 218947280. Its totient is φ = 109473636.

The previous prime is 164210443. The next prime is 164210461. The reversal of 164210457 is 754012461.

164210457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 754012461 = 3 ⋅251337487.

It is not a de Polignac number, because 164210457 - 2⁸ = 164210201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164210257) 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, 27368407 + ... + 27368412.

It is an arithmetic number, because the mean of its divisors is an integer number (54736820).

Almost surely, 2^164210457 is an apocalyptic number.

It is an amenable number.

164210457 is a deficient number, since it is larger than the sum of its proper divisors (54736823).

164210457 is an equidigital number, since it uses as much as digits as its factorization.

164210457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54736822.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 164210457 is about 12814.4628057519. The cubic root of 164210457 is about 547.6044095198.

The spelling of 164210457 in words is "one hundred sixty-four million, two hundred ten thousand, four hundred fifty-seven".