2688912169 has 2 divisors, whose sum is σ = 2688912170. Its totient is φ = 2688912168.

The previous prime is 2688912119. The next prime is 2688912181. The reversal of 2688912169 is 9612198862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2682722025 + 6190144 = 51795^2 + 2488^2 .

It is a cyclic number.

It is not a de Polignac number, because 2688912169 - 2⁹ = 2688911657 is a prime.

It is a super-2 number, since 2×2688912169² = 14460497305192569122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2688912119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344456084 + 1344456085.

It is an arithmetic number, because the mean of its divisors is an integer number (1344456085).

Almost surely, 2^2688912169 is an apocalyptic number.

It is an amenable number.

2688912169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2688912169 is an equidigital number, since it uses as much as digits as its factorization.

2688912169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 52.

The square root of 2688912169 is about 51854.7217618608. The cubic root of 2688912169 is about 1390.5679181310.

The spelling of 2688912169 in words is "two billion, six hundred eighty-eight million, nine hundred twelve thousand, one hundred sixty-nine".