1913810113 has 2 divisors, whose sum is σ = 1913810114. Its totient is φ = 1913810112.

The previous prime is 1913810111. The next prime is 1913810167. The reversal of 1913810113 is 3110183191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214313409 + 699496704 = 34847^2 + 26448^2 .

It is a cyclic number.

It is not a de Polignac number, because 1913810113 - 2¹ = 1913810111 is a prime.

It is a super-3 number, since 3×1913810113³ (a number of 29 digits) contains 333 as substring.

Together with 1913810111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1913810111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956905056 + 956905057.

It is an arithmetic number, because the mean of its divisors is an integer number (956905057).

Almost surely, 2^1913810113 is an apocalyptic number.

It is an amenable number.

1913810113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913810113 is an equidigital number, since it uses as much as digits as its factorization.

1913810113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1913810113 is about 43747.1154820521. The cubic root of 1913810113 is about 1241.5559104328. Note that the first 3 decimals are identical.

It can be divided in two parts, 191 and 3810113, that added together give a square (3810304 = 1952²).

The spelling of 1913810113 in words is "one billion, nine hundred thirteen million, eight hundred ten thousand, one hundred thirteen".