164131615 has 4 divisors (see below), whose sum is σ = 196957944. Its totient is φ = 131305288.

The previous prime is 164131613. The next prime is 164131621. The reversal of 164131615 is 516131461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164131615 - 2¹ = 164131613 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 (164131613) 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, 16413157 + ... + 16413166.

It is an arithmetic number, because the mean of its divisors is an integer number (49239486).

Almost surely, 2^164131615 is an apocalyptic number.

164131615 is a deficient number, since it is larger than the sum of its proper divisors (32826329).

164131615 is an equidigital number, since it uses as much as digits as its factorization.

164131615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32826328.

The product of its digits is 2160, while the sum is 28.

The square root of 164131615 is about 12811.3861467056. The cubic root of 164131615 is about 547.5167554626.

The spelling of 164131615 in words is "one hundred sixty-four million, one hundred thirty-one thousand, six hundred fifteen".