2143844245 has 16 divisors (see below), whose sum is σ = 2730779568. Its totient is φ = 1610137600.

The previous prime is 2143844221. The next prime is 2143844303. The reversal of 2143844245 is 5424483412.

It can be written as a sum of positive squares in 8 ways, for example, as 500595876 + 1643248369 = 22374^2 + 40537^2 .

It is not a de Polignac number, because 2143844245 - 2¹³ = 2143836053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2637 + ... + 65533.

It is an arithmetic number, because the mean of its divisors is an integer number (170673723).

Almost surely, 2^2143844245 is an apocalyptic number.

It is an amenable number.

2143844245 is a deficient number, since it is larger than the sum of its proper divisors (586935323).

2143844245 is a wasteful number, since it uses less digits than its factorization.

2143844245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63320.

The product of its digits is 122880, while the sum is 37.

The square root of 2143844245 is about 46301.6656827808. The cubic root of 2143844245 is about 1289.4299195696.

The spelling of 2143844245 in words is "two billion, one hundred forty-three million, eight hundred forty-four thousand, two hundred forty-five".