249491709683 has 2 divisors, whose sum is σ = 249491709684. Its totient is φ = 249491709682.

The previous prime is 249491709659. The next prime is 249491709737. The reversal of 249491709683 is 386907194942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249491709683 - 2¹² = 249491705587 is a prime.

It is a super-2 number, since 2×249491709683² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (249491709083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124745854841 + 124745854842.

It is an arithmetic number, because the mean of its divisors is an integer number (124745854842).

Almost surely, 2^249491709683 is an apocalyptic number.

249491709683 is a deficient number, since it is larger than the sum of its proper divisors (1).

249491709683 is an equidigital number, since it uses as much as digits as its factorization.

249491709683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 249491709683 in words is "two hundred forty-nine billion, four hundred ninety-one million, seven hundred nine thousand, six hundred eighty-three".