1260789287 has 2 divisors, whose sum is σ = 1260789288. Its totient is φ = 1260789286.

The previous prime is 1260789263. The next prime is 1260789307. The reversal of 1260789287 is 7829870621.

It is a strong prime.

It is an emirp because it is prime and its reverse (7829870621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1260789287 - 2⁶ = 1260789223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1260789247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630394643 + 630394644.

It is an arithmetic number, because the mean of its divisors is an integer number (630394644).

Almost surely, 2^1260789287 is an apocalyptic number.

1260789287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260789287 is an equidigital number, since it uses as much as digits as its factorization.

1260789287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 1260789287 is about 35507.5947791455. The cubic root of 1260789287 is about 1080.3077789359.

The spelling of 1260789287 in words is "one billion, two hundred sixty million, seven hundred eighty-nine thousand, two hundred eighty-seven".