2506747493 has 2 divisors, whose sum is σ = 2506747494. Its totient is φ = 2506747492.

The previous prime is 2506747471. The next prime is 2506747571. The reversal of 2506747493 is 3947476052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1729062724 + 777684769 = 41582^2 + 27887^2 .

It is a cyclic number.

It is not a de Polignac number, because 2506747493 - 2²⁰ = 2505698917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2506747403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253373746 + 1253373747.

It is an arithmetic number, because the mean of its divisors is an integer number (1253373747).

Almost surely, 2^2506747493 is an apocalyptic number.

It is an amenable number.

2506747493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2506747493 is an equidigital number, since it uses as much as digits as its factorization.

2506747493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The square root of 2506747493 is about 50067.4294626756. The cubic root of 2506747493 is about 1358.4287456768.

The spelling of 2506747493 in words is "two billion, five hundred six million, seven hundred forty-seven thousand, four hundred ninety-three".