1249369133 has 2 divisors, whose sum is σ = 1249369134. Its totient is φ = 1249369132.

The previous prime is 1249369063. The next prime is 1249369153. The reversal of 1249369133 is 3319639421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 772951204 + 476417929 = 27802^2 + 21827^2 .

It is a cyclic number.

It is not a de Polignac number, because 1249369133 - 2¹⁴ = 1249352749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1249369153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624684566 + 624684567.

It is an arithmetic number, because the mean of its divisors is an integer number (624684567).

Almost surely, 2^1249369133 is an apocalyptic number.

It is an amenable number.

1249369133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249369133 is an equidigital number, since it uses as much as digits as its factorization.

1249369133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 41.

The square root of 1249369133 is about 35346.4161266740. The cubic root of 1249369133 is about 1077.0360929537.

The spelling of 1249369133 in words is "one billion, two hundred forty-nine million, three hundred sixty-nine thousand, one hundred thirty-three".