2173389149 has 4 divisors (see below), whose sum is σ = 2174552640. Its totient is φ = 2172225660.

The previous prime is 2173389109. The next prime is 2173389173. The reversal of 2173389149 is 9419833712.

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 a cyclic number.

It is not a de Polignac number, because 2173389149 - 2²⁸ = 1904953693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173389109) 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, 578939 + ... + 582680.

It is an arithmetic number, because the mean of its divisors is an integer number (543638160).

Almost surely, 2^2173389149 is an apocalyptic number.

It is an amenable number.

2173389149 is a deficient number, since it is larger than the sum of its proper divisors (1163491).

2173389149 is a wasteful number, since it uses less digits than its factorization.

2173389149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163490.

The product of its digits is 326592, while the sum is 47.

The square root of 2173389149 is about 46619.6219311139. The cubic root of 2173389149 is about 1295.3262444832.

The spelling of 2173389149 in words is "two billion, one hundred seventy-three million, three hundred eighty-nine thousand, one hundred forty-nine".