1288804687 has 2 divisors, whose sum is σ = 1288804688. Its totient is φ = 1288804686.

The previous prime is 1288804613. The next prime is 1288804691. The reversal of 1288804687 is 7864088821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1288804687 - 2²³ = 1280416079 is a prime.

It is a super-2 number, since 2×1288804687² = 3322035042466335938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1288804607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644402343 + 644402344.

It is an arithmetic number, because the mean of its divisors is an integer number (644402344).

Almost surely, 2^1288804687 is an apocalyptic number.

1288804687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288804687 is an equidigital number, since it uses as much as digits as its factorization.

1288804687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1376256, while the sum is 52.

The square root of 1288804687 is about 35899.9260027093. The cubic root of 1288804687 is about 1088.2509015210.

The spelling of 1288804687 in words is "one billion, two hundred eighty-eight million, eight hundred four thousand, six hundred eighty-seven".