164215093 has 4 divisors (see below), whose sum is σ = 187674400. Its totient is φ = 140755788.

The previous prime is 164215061. The next prime is 164215097. The reversal of 164215093 is 390512461.

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 not a de Polignac number, because 164215093 - 2⁵ = 164215061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164215097) 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, 11729643 + ... + 11729656.

It is an arithmetic number, because the mean of its divisors is an integer number (46918600).

Almost surely, 2^164215093 is an apocalyptic number.

It is an amenable number.

164215093 is a deficient number, since it is larger than the sum of its proper divisors (23459307).

164215093 is an equidigital number, since it uses as much as digits as its factorization.

164215093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23459306.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 164215093 is about 12814.6436938371. The cubic root of 164215093 is about 547.6095628054.

The spelling of 164215093 in words is "one hundred sixty-four million, two hundred fifteen thousand, ninety-three".