1288875169 has 2 divisors, whose sum is σ = 1288875170. Its totient is φ = 1288875168.

The previous prime is 1288875103. The next prime is 1288875191. The reversal of 1288875169 is 9615788821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1053651600 + 235223569 = 32460^2 + 15337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1288875169 is a prime.

It is a super-2 number, since 2×1288875169² = 3322398402529557122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1288875199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644437584 + 644437585.

It is an arithmetic number, because the mean of its divisors is an integer number (644437585).

Almost surely, 2^1288875169 is an apocalyptic number.

It is an amenable number.

1288875169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288875169 is an equidigital number, since it uses as much as digits as its factorization.

1288875169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 55.

The square root of 1288875169 is about 35900.9076347660. The cubic root of 1288875169 is about 1088.2707392054.

The spelling of 1288875169 in words is "one billion, two hundred eighty-eight million, eight hundred seventy-five thousand, one hundred sixty-nine".