1248436811 has 2 divisors, whose sum is σ = 1248436812. Its totient is φ = 1248436810.

The previous prime is 1248436793. The next prime is 1248436817. The reversal of 1248436811 is 1186348421.

It is a strong prime.

It is an emirp because it is prime and its reverse (1186348421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1248436811 - 2¹⁰ = 1248435787 is a prime.

It is not a weakly prime, because it can be changed into another prime (1248436817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624218405 + 624218406.

It is an arithmetic number, because the mean of its divisors is an integer number (624218406).

Almost surely, 2^1248436811 is an apocalyptic number.

1248436811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248436811 is an equidigital number, since it uses as much as digits as its factorization.

1248436811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 38.

The square root of 1248436811 is about 35333.2253127280. The cubic root of 1248436811 is about 1076.7681192228.

The spelling of 1248436811 in words is "one billion, two hundred forty-eight million, four hundred thirty-six thousand, eight hundred eleven".