1249313437 has 2 divisors, whose sum is σ = 1249313438. Its totient is φ = 1249313436.

The previous prime is 1249313411. The next prime is 1249313453. The reversal of 1249313437 is 7343139421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1220733721 + 28579716 = 34939^2 + 5346^2 .

It is an emirp because it is prime and its reverse (7343139421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1249313437 - 2²³ = 1240924829 is a prime.

It is a super-3 number, since 3×1249313437³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1249313396 and 1249313405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1249313407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624656718 + 624656719.

It is an arithmetic number, because the mean of its divisors is an integer number (624656719).

Almost surely, 2^1249313437 is an apocalyptic number.

It is an amenable number.

1249313437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249313437 is an equidigital number, since it uses as much as digits as its factorization.

1249313437 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1249313437 is about 35345.6282586687. The cubic root of 1249313437 is about 1077.0200882112.

The spelling of 1249313437 in words is "one billion, two hundred forty-nine million, three hundred thirteen thousand, four hundred thirty-seven".