164359915 has 4 divisors (see below), whose sum is σ = 197231904. Its totient is φ = 131487928.

The previous prime is 164359913. The next prime is 164359931. The reversal of 164359915 is 519953461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 519953461 = 5443 ⋅95527.

It is a cyclic number.

It is not a de Polignac number, because 164359915 - 2¹ = 164359913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164359913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16435987 + ... + 16435996.

It is an arithmetic number, because the mean of its divisors is an integer number (49307976).

Almost surely, 2^164359915 is an apocalyptic number.

164359915 is a deficient number, since it is larger than the sum of its proper divisors (32871989).

164359915 is an equidigital number, since it uses as much as digits as its factorization.

164359915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32871988.

The product of its digits is 145800, while the sum is 43.

The square root of 164359915 is about 12820.2930933735. The cubic root of 164359915 is about 547.7704952522.

The spelling of 164359915 in words is "one hundred sixty-four million, three hundred fifty-nine thousand, nine hundred fifteen".