2173330387 has 4 divisors (see below), whose sum is σ = 2208958816. Its totient is φ = 2137701960.

The previous prime is 2173330373. The next prime is 2173330403. The reversal of 2173330387 is 7830333712.

It is a happy number.

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 2173330387 - 2²⁷ = 2039112659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2173330987) 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, 17814123 + ... + 17814244.

It is an arithmetic number, because the mean of its divisors is an integer number (552239704).

Almost surely, 2^2173330387 is an apocalyptic number.

2173330387 is a deficient number, since it is larger than the sum of its proper divisors (35628429).

2173330387 is an equidigital number, since it uses as much as digits as its factorization.

2173330387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35628428.

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 2173330387 is about 46618.9916986629. The cubic root of 2173330387 is about 1295.3145704507.

The spelling of 2173330387 in words is "two billion, one hundred seventy-three million, three hundred thirty thousand, three hundred eighty-seven".