2164507329 has 4 divisors (see below), whose sum is σ = 2886009776. Its totient is φ = 1443004884.

The previous prime is 2164507277. The next prime is 2164507339. The reversal of 2164507329 is 9237054612.

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 not a de Polignac number, because 2164507329 - 2⁸ = 2164507073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2164507339) 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, 360751219 + ... + 360751224.

It is an arithmetic number, because the mean of its divisors is an integer number (721502444).

Almost surely, 2^2164507329 is an apocalyptic number.

It is an amenable number.

2164507329 is a deficient number, since it is larger than the sum of its proper divisors (721502447).

2164507329 is an equidigital number, since it uses as much as digits as its factorization.

2164507329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721502446.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 2164507329 is about 46524.2660232271. The cubic root of 2164507329 is about 1293.5593324654.

The spelling of 2164507329 in words is "two billion, one hundred sixty-four million, five hundred seven thousand, three hundred twenty-nine".