1273846801 has 2 divisors, whose sum is σ = 1273846802. Its totient is φ = 1273846800.

The previous prime is 1273846747. The next prime is 1273846843. The reversal of 1273846801 is 1086483721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 979690000 + 294156801 = 31300^2 + 17151^2 .

It is an emirp because it is prime and its reverse (1086483721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1273846801 - 2¹¹ = 1273844753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1273846201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636923400 + 636923401.

It is an arithmetic number, because the mean of its divisors is an integer number (636923401).

Almost surely, 2^1273846801 is an apocalyptic number.

It is an amenable number.

1273846801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273846801 is an equidigital number, since it uses as much as digits as its factorization.

1273846801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1273846801 is about 35690.9904737876. The cubic root of 1273846801 is about 1084.0244229666.

The spelling of 1273846801 in words is "one billion, two hundred seventy-three million, eight hundred forty-six thousand, eight hundred one".