249137263 has 2 divisors, whose sum is σ = 249137264. Its totient is φ = 249137262.

The previous prime is 249137249. The next prime is 249137281. The reversal of 249137263 is 362731942.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249137263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249137233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124568631 + 124568632.

It is an arithmetic number, because the mean of its divisors is an integer number (124568632).

Almost surely, 2^249137263 is an apocalyptic number.

249137263 is a deficient number, since it is larger than the sum of its proper divisors (1).

249137263 is an equidigital number, since it uses as much as digits as its factorization.

249137263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 37.

The square root of 249137263 is about 15784.0825834129. The cubic root of 249137263 is about 629.2350360937.

The spelling of 249137263 in words is "two hundred forty-nine million, one hundred thirty-seven thousand, two hundred sixty-three".