1249247283 has 16 divisors (see below), whose sum is σ = 1755561600. Its totient is φ = 787993920.

The previous prime is 1249247267. The next prime is 1249247287. The reversal of 1249247283 is 3827429421.

It is not a de Polignac number, because 1249247283 - 2⁴ = 1249247267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1249247287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32568 + ... + 59658.

It is an arithmetic number, because the mean of its divisors is an integer number (109722600).

Almost surely, 2^1249247283 is an apocalyptic number.

1249247283 is a deficient number, since it is larger than the sum of its proper divisors (506314317).

1249247283 is a wasteful number, since it uses less digits than its factorization.

1249247283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27922.

The product of its digits is 193536, while the sum is 42.

The square root of 1249247283 is about 35344.6924304060. The cubic root of 1249247283 is about 1077.0010776511.

The spelling of 1249247283 in words is "one billion, two hundred forty-nine million, two hundred forty-seven thousand, two hundred eighty-three".