1288695097 has 4 divisors (see below), whose sum is σ = 1289908480. Its totient is φ = 1287481716.

The previous prime is 1288695091. The next prime is 1288695103. The reversal of 1288695097 is 7905968821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1288695091) and next prime (1288695103).

It is a cyclic number.

It is not a de Polignac number, because 1288695097 - 2¹⁵ = 1288662329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1288695091) 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 in 3 ways as a sum of consecutive naturals, for example, 605097 + ... + 607222.

It is an arithmetic number, because the mean of its divisors is an integer number (322477120).

Almost surely, 2^1288695097 is an apocalyptic number.

It is an amenable number.

1288695097 is a deficient number, since it is larger than the sum of its proper divisors (1213383).

1288695097 is a wasteful number, since it uses less digits than its factorization.

1288695097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213382.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The square root of 1288695097 is about 35898.3996439953. The cubic root of 1288695097 is about 1088.2200551618.

The spelling of 1288695097 in words is "one billion, two hundred eighty-eight million, six hundred ninety-five thousand, ninety-seven".