1349888590109 has 2 divisors, whose sum is σ = 1349888590110. Its totient is φ = 1349888590108.

The previous prime is 1349888590091. The next prime is 1349888590129. The reversal of 1349888590109 is 9010958889431.

It is a happy number.

Together with previous prime (1349888590091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214921995225 + 134966594884 = 1102235^2 + 367378^2 .

It is a cyclic number.

It is not a de Polignac number, because 1349888590109 - 2²⁰ = 1349887541533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1349888590129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674944295054 + 674944295055.

It is an arithmetic number, because the mean of its divisors is an integer number (674944295055).

Almost surely, 2^{1349888590109} is an apocalyptic number.

It is an amenable number.

1349888590109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1349888590109 is an equidigital number, since it uses as much as digits as its factorization.

1349888590109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22394880, while the sum is 65.

The spelling of 1349888590109 in words is "one trillion, three hundred forty-nine billion, eight hundred eighty-eight million, five hundred ninety thousand, one hundred nine".