3551091689 has 2 divisors, whose sum is σ = 3551091690. Its totient is φ = 3551091688.

The previous prime is 3551091629. The next prime is 3551091703. The reversal of 3551091689 is 9861901553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3318681664 + 232410025 = 57608^2 + 15245^2 .

It is a cyclic number.

It is not a de Polignac number, because 3551091689 - 2²⁰ = 3550043113 is a prime.

It is a super-2 number, since 2×3551091689² = 25220504367369745442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3551091619) 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 as a sum of consecutive naturals, namely, 1775545844 + 1775545845.

It is an arithmetic number, because the mean of its divisors is an integer number (1775545845).

Almost surely, 2^3551091689 is an apocalyptic number.

It is an amenable number.

3551091689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3551091689 is an equidigital number, since it uses as much as digits as its factorization.

3551091689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 47.

The square root of 3551091689 is about 59591.0369854393. The cubic root of 3551091689 is about 1525.6466577972.

The spelling of 3551091689 in words is "three billion, five hundred fifty-one million, ninety-one thousand, six hundred eighty-nine".