1287706151 has 2 divisors, whose sum is σ = 1287706152. Its totient is φ = 1287706150.

The previous prime is 1287706097. The next prime is 1287706163. The reversal of 1287706151 is 1516077821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1287706151 - 2⁶ = 1287706087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1287705151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643853075 + 643853076.

It is an arithmetic number, because the mean of its divisors is an integer number (643853076).

Almost surely, 2^1287706151 is an apocalyptic number.

1287706151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287706151 is an equidigital number, since it uses as much as digits as its factorization.

1287706151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 38.

The square root of 1287706151 is about 35884.6227651901. The cubic root of 1287706151 is about 1087.9416168458.

The spelling of 1287706151 in words is "one billion, two hundred eighty-seven million, seven hundred six thousand, one hundred fifty-one".