2493787261 has 16 divisors (see below), whose sum is σ = 2880023040. Its totient is φ = 2115094320.

The previous prime is 2493787253. The next prime is 2493787271. The reversal of 2493787261 is 1627873942.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2493787261 - 2³ = 2493787253 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 (2493787271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 965670 + ... + 968248.

It is an arithmetic number, because the mean of its divisors is an integer number (180001440).

Almost surely, 2^2493787261 is an apocalyptic number.

It is an amenable number.

2493787261 is a deficient number, since it is larger than the sum of its proper divisors (386235779).

2493787261 is a wasteful number, since it uses less digits than its factorization.

2493787261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984.

The product of its digits is 1016064, while the sum is 49.

The square root of 2493787261 is about 49937.8339638395. The cubic root of 2493787261 is about 1356.0836111620.

The spelling of 2493787261 in words is "two billion, four hundred ninety-three million, seven hundred eighty-seven thousand, two hundred sixty-one".