164356815 has 32 divisors (see below), whose sum is σ = 303367680. Its totient is φ = 74427264.

The previous prime is 164356813. The next prime is 164356817. The reversal of 164356815 is 518653461.

It is an interprime number because it is at equal distance from previous prime (164356813) and next prime (164356817).

It is not a de Polignac number, because 164356815 - 2¹ = 164356813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164356813) 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 31 ways as a sum of consecutive naturals, for example, 3921 + ... + 18549.

It is an arithmetic number, because the mean of its divisors is an integer number (9480240).

Almost surely, 2^164356815 is an apocalyptic number.

164356815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164356815 is a deficient number, since it is larger than the sum of its proper divisors (139010865).

164356815 is a wasteful number, since it uses less digits than its factorization.

164356815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14751.

The product of its digits is 86400, while the sum is 39.

The square root of 164356815 is about 12820.1721907313. The cubic root of 164356815 is about 547.7670513889.

The spelling of 164356815 in words is "one hundred sixty-four million, three hundred fifty-six thousand, eight hundred fifteen".