1306535987 has 2 divisors, whose sum is σ = 1306535988. Its totient is φ = 1306535986.

The previous prime is 1306535977. The next prime is 1306536001. The reversal of 1306535987 is 7895356031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1306535987 - 2¹⁰ = 1306534963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1306535917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653267993 + 653267994.

It is an arithmetic number, because the mean of its divisors is an integer number (653267994).

Almost surely, 2^1306535987 is an apocalyptic number.

1306535987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306535987 is an equidigital number, since it uses as much as digits as its factorization.

1306535987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 1306535987 is about 36146.0369473612. The cubic root of 1306535987 is about 1093.2188851817.

The spelling of 1306535987 in words is "one billion, three hundred six million, five hundred thirty-five thousand, nine hundred eighty-seven".