3551968109 has 2 divisors, whose sum is σ = 3551968110. Its totient is φ = 3551968108.

The previous prime is 3551968099. The next prime is 3551968139. The reversal of 3551968109 is 9018691553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3086358025 + 465610084 = 55555^2 + 21578^2 .

It is an emirp because it is prime and its reverse (9018691553) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3551968109 - 2⁴ = 3551968093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3551968139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1775984054 + 1775984055.

It is an arithmetic number, because the mean of its divisors is an integer number (1775984055).

Almost surely, 2^3551968109 is an apocalyptic number.

It is an amenable number.

3551968109 is a deficient number, since it is larger than the sum of its proper divisors (1).

3551968109 is an equidigital number, since it uses as much as digits as its factorization.

3551968109 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 3551968109 is about 59598.3901544329. The cubic root of 3551968109 is about 1525.7721588520.

The spelling of 3551968109 in words is "three billion, five hundred fifty-one million, nine hundred sixty-eight thousand, one hundred nine".