1913810111 has 2 divisors, whose sum is σ = 1913810112. Its totient is φ = 1913810110.

The previous prime is 1913810083. The next prime is 1913810113. The reversal of 1913810111 is 1110183191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1913810111 - 2¹⁸ = 1913547967 is a prime.

Together with 1913810113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1913810113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956905055 + 956905056.

It is an arithmetic number, because the mean of its divisors is an integer number (956905056).

Almost surely, 2^1913810111 is an apocalyptic number.

1913810111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913810111 is an equidigital number, since it uses as much as digits as its factorization.

1913810111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 26.

The square root of 1913810111 is about 43747.1154591934. The cubic root of 1913810111 is about 1241.5559100003. Note that the first 3 decimals are identical.

The spelling of 1913810111 in words is "one billion, nine hundred thirteen million, eight hundred ten thousand, one hundred eleven".