2658890869 has 2 divisors, whose sum is σ = 2658890870. Its totient is φ = 2658890868.

The previous prime is 2658890851. The next prime is 2658890977. The reversal of 2658890869 is 9680988562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2412086769 + 246804100 = 49113^2 + 15710^2 .

It is a cyclic number.

It is not a de Polignac number, because 2658890869 - 2⁹ = 2658890357 is a prime.

It is a super-2 number, since 2×2658890869² = 14139401306503150322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2658890849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1329445434 + 1329445435.

It is an arithmetic number, because the mean of its divisors is an integer number (1329445435).

Almost surely, 2^2658890869 is an apocalyptic number.

It is an amenable number.

2658890869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2658890869 is an equidigital number, since it uses as much as digits as its factorization.

2658890869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14929920, while the sum is 61.

The square root of 2658890869 is about 51564.4341479668. The cubic root of 2658890869 is about 1385.3733772449.

The spelling of 2658890869 in words is "two billion, six hundred fifty-eight million, eight hundred ninety thousand, eight hundred sixty-nine".