1909655113 has 2 divisors, whose sum is σ = 1909655114. Its totient is φ = 1909655112.

The previous prime is 1909655053. The next prime is 1909655117. The reversal of 1909655113 is 3115569091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1055145289 + 854509824 = 32483^2 + 29232^2 .

It is a cyclic number.

It is not a de Polignac number, because 1909655113 - 2⁹ = 1909654601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1909655117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 954827556 + 954827557.

It is an arithmetic number, because the mean of its divisors is an integer number (954827557).

Almost surely, 2^1909655113 is an apocalyptic number.

It is an amenable number.

1909655113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1909655113 is an equidigital number, since it uses as much as digits as its factorization.

1909655113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36450, while the sum is 40.

The square root of 1909655113 is about 43699.6008334172. The cubic root of 1909655113 is about 1240.6567612187.

The spelling of 1909655113 in words is "one billion, nine hundred nine million, six hundred fifty-five thousand, one hundred thirteen".