2146280789 has 4 divisors (see below), whose sum is σ = 2147502720. Its totient is φ = 2145058860.

The previous prime is 2146280767. The next prime is 2146280809. The reversal of 2146280789 is 9870826412.

It is a happy number.

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 2146280789 - 2²⁴ = 2129503573 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 (2146280089) 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, 608327 + ... + 611844.

It is an arithmetic number, because the mean of its divisors is an integer number (536875680).

Almost surely, 2^2146280789 is an apocalyptic number.

It is an amenable number.

2146280789 is a deficient number, since it is larger than the sum of its proper divisors (1221931).

2146280789 is a wasteful number, since it uses less digits than its factorization.

2146280789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221930.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 2146280789 is about 46327.9698346474. The cubic root of 2146280789 is about 1289.9182266936.

The spelling of 2146280789 in words is "two billion, one hundred forty-six million, two hundred eighty thousand, seven hundred eighty-nine".