1280541863 has 2 divisors, whose sum is σ = 1280541864. Its totient is φ = 1280541862.

The previous prime is 1280541853. The next prime is 1280541869. The reversal of 1280541863 is 3681450821.

It is a strong prime.

It is an emirp because it is prime and its reverse (3681450821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1280541863 - 2¹⁸ = 1280279719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1280541869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640270931 + 640270932.

It is an arithmetic number, because the mean of its divisors is an integer number (640270932).

Almost surely, 2^1280541863 is an apocalyptic number.

1280541863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280541863 is an equidigital number, since it uses as much as digits as its factorization.

1280541863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 1280541863 is about 35784.6596043612. The cubic root of 1280541863 is about 1085.9202377808.

The spelling of 1280541863 in words is "one billion, two hundred eighty million, five hundred forty-one thousand, eight hundred sixty-three".