164253407 has 4 divisors (see below), whose sum is σ = 169551936. Its totient is φ = 158954880.

The previous prime is 164253367. The next prime is 164253409. The reversal of 164253407 is 704352461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704352461 = 37 ⋅19036553.

It is a cyclic number.

It is not a de Polignac number, because 164253407 - 2⁶ = 164253343 is a prime.

It is a super-2 number, since 2×164253407² = 53958363422215298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164253409) 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 in 3 ways as a sum of consecutive naturals, for example, 2649218 + ... + 2649279.

It is an arithmetic number, because the mean of its divisors is an integer number (42387984).

Almost surely, 2^164253407 is an apocalyptic number.

164253407 is a deficient number, since it is larger than the sum of its proper divisors (5298529).

164253407 is an equidigital number, since it uses as much as digits as its factorization.

164253407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5298528.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 164253407 is about 12816.1385370165. The cubic root of 164253407 is about 547.6521481750.

The spelling of 164253407 in words is "one hundred sixty-four million, two hundred fifty-three thousand, four hundred seven".