1246381249 has 2 divisors, whose sum is σ = 1246381250. Its totient is φ = 1246381248.

The previous prime is 1246381243. The next prime is 1246381259. The reversal of 1246381249 is 9421836421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1209996225 + 36385024 = 34785^2 + 6032^2 .

It is a cyclic number.

It is not a de Polignac number, because 1246381249 - 2⁵ = 1246381217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1246381243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623190624 + 623190625.

It is an arithmetic number, because the mean of its divisors is an integer number (623190625).

Almost surely, 2^1246381249 is an apocalyptic number.

It is an amenable number.

1246381249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1246381249 is an equidigital number, since it uses as much as digits as its factorization.

1246381249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The square root of 1246381249 is about 35304.1250989173. The cubic root of 1246381249 is about 1076.1768252420.

The spelling of 1246381249 in words is "one billion, two hundred forty-six million, three hundred eighty-one thousand, two hundred forty-nine".