1248969609249 has 4 divisors (see below), whose sum is σ = 1665292812336. Its totient is φ = 832646406164.

The previous prime is 1248969609233. The next prime is 1248969609257. The reversal of 1248969609249 is 9429069698421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1248969609249 - 2⁴ = 1248969609233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1248969809249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208161601539 + ... + 208161601544.

It is an arithmetic number, because the mean of its divisors is an integer number (416323203084).

Almost surely, 2^{1248969609249} is an apocalyptic number.

It is an amenable number.

1248969609249 is a deficient number, since it is larger than the sum of its proper divisors (416323203087).

1248969609249 is an equidigital number, since it uses as much as digits as its factorization.

1248969609249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416323203086.

The product of its (nonzero) digits is 120932352, while the sum is 69.

The spelling of 1248969609249 in words is "one trillion, two hundred forty-eight billion, nine hundred sixty-nine million, six hundred nine thousand, two hundred forty-nine".