19115113 has 2 divisors, whose sum is σ = 19115114. Its totient is φ = 19115112.

The previous prime is 19115081. The next prime is 19115119. The reversal of 19115113 is 31151191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19114384 + 729 = 4372^2 + 27^2 .

It is a cyclic number.

It is not a de Polignac number, because 19115113 - 2⁵ = 19115081 is a prime.

It is not a weakly prime, because it can be changed into another prime (19115119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9557556 + 9557557.

It is an arithmetic number, because the mean of its divisors is an integer number (9557557).

Almost surely, 2^19115113 is an apocalyptic number.

It is an amenable number.

19115113 is a deficient number, since it is larger than the sum of its proper divisors (1).

19115113 is an equidigital number, since it uses as much as digits as its factorization.

19115113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135, while the sum is 22.

The square root of 19115113 is about 4372.0833706598. The cubic root of 19115113 is about 267.3779709516.

The spelling of 19115113 in words is "nineteen million, one hundred fifteen thousand, one hundred thirteen".