1260376987 has 2 divisors, whose sum is σ = 1260376988. Its totient is φ = 1260376986.

The previous prime is 1260376973. The next prime is 1260377009. The reversal of 1260376987 is 7896730621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1260376987 - 2²³ = 1251988379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1260376987.

It is not a weakly prime, because it can be changed into another prime (1260376927) 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, 630188493 + 630188494.

It is an arithmetic number, because the mean of its divisors is an integer number (630188494).

Almost surely, 2^1260376987 is an apocalyptic number.

1260376987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260376987 is an equidigital number, since it uses as much as digits as its factorization.

1260376987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 1260376987 is about 35501.7885042430. The cubic root of 1260376987 is about 1080.1900062933.

The spelling of 1260376987 in words is "one billion, two hundred sixty million, three hundred seventy-six thousand, nine hundred eighty-seven".