6890618269 has 2 divisors, whose sum is σ = 6890618270. Its totient is φ = 6890618268.

The previous prime is 6890618239. The next prime is 6890618297. The reversal of 6890618269 is 9628160986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5770377369 + 1120240900 = 75963^2 + 33470^2 .

It is a cyclic number.

It is not a de Polignac number, because 6890618269 - 2⁹ = 6890617757 is a prime.

It is a super-2 number, since 2×6890618269² = 94961240258153112722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6890618239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3445309134 + 3445309135.

It is an arithmetic number, because the mean of its divisors is an integer number (3445309135).

Almost surely, 2^6890618269 is an apocalyptic number.

It is an amenable number.

6890618269 is a deficient number, since it is larger than the sum of its proper divisors (1).

6890618269 is an equidigital number, since it uses as much as digits as its factorization.

6890618269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The square root of 6890618269 is about 83009.7480359988. The cubic root of 6890618269 is about 1902.9150331437.

The spelling of 6890618269 in words is "six billion, eight hundred ninety million, six hundred eighteen thousand, two hundred sixty-nine".