1305851087 has 2 divisors, whose sum is σ = 1305851088. Its totient is φ = 1305851086.

The previous prime is 1305851069. The next prime is 1305851123. The reversal of 1305851087 is 7801585031.

It is a weak prime.

It is an emirp because it is prime and its reverse (7801585031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1305851087 - 2⁶ = 1305851023 is a prime.

It is a super-2 number, since 2×1305851087² = 3410494122838163138, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1305851087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305851387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652925543 + 652925544.

It is an arithmetic number, because the mean of its divisors is an integer number (652925544).

Almost surely, 2^1305851087 is an apocalyptic number.

1305851087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305851087 is an equidigital number, since it uses as much as digits as its factorization.

1305851087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 38.

The square root of 1305851087 is about 36136.5616377652. The cubic root of 1305851087 is about 1093.0278261540.

The spelling of 1305851087 in words is "one billion, three hundred five million, eight hundred fifty-one thousand, eighty-seven".