2493221751 has 24 divisors (see below), whose sum is σ = 3861449280. Its totient is φ = 1544564736.

The previous prime is 2493221741. The next prime is 2493221771. The reversal of 2493221751 is 1571223942.

It is not a de Polignac number, because 2493221751 - 2⁹ = 2493221239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2493221711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91050 + ... + 115223.

It is an arithmetic number, because the mean of its divisors is an integer number (160893720).

Almost surely, 2^2493221751 is an apocalyptic number.

2493221751 is a deficient number, since it is larger than the sum of its proper divisors (1368227529).

2493221751 is a wasteful number, since it uses less digits than its factorization.

2493221751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206375 (or 206372 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 2493221751 is about 49932.1715029499. The cubic root of 2493221751 is about 1355.9810981650.

The spelling of 2493221751 in words is "two billion, four hundred ninety-three million, two hundred twenty-one thousand, seven hundred fifty-one".