2492743621 has 2 divisors, whose sum is σ = 2492743622. Its totient is φ = 2492743620.

The previous prime is 2492743619. The next prime is 2492743699. The reversal of 2492743621 is 1263472942.

2492743621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2328545025 + 164198596 = 48255^2 + 12814^2 .

It is a cyclic number.

It is not a de Polignac number, because 2492743621 - 2¹ = 2492743619 is a prime.

Together with 2492743619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2492741621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1246371810 + 1246371811.

It is an arithmetic number, because the mean of its divisors is an integer number (1246371811).

Almost surely, 2^2492743621 is an apocalyptic number.

It is an amenable number.

2492743621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2492743621 is an equidigital number, since it uses as much as digits as its factorization.

2492743621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 2492743621 is about 49927.3834784079. The cubic root of 2492743621 is about 1355.8944129098.

The spelling of 2492743621 in words is "two billion, four hundred ninety-two million, seven hundred forty-three thousand, six hundred twenty-one".