18734113 has 2 divisors, whose sum is σ = 18734114. Its totient is φ = 18734112.

The previous prime is 18734101. The next prime is 18734123. The reversal of 18734113 is 31143781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17372224 + 1361889 = 4168^2 + 1167^2 .

It is a cyclic number.

It is not a de Polignac number, because 18734113 - 2⁵ = 18734081 is a prime.

It is not a weakly prime, because it can be changed into another prime (18734123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9367056 + 9367057.

It is an arithmetic number, because the mean of its divisors is an integer number (9367057).

Almost surely, 2^18734113 is an apocalyptic number.

It is an amenable number.

18734113 is a deficient number, since it is larger than the sum of its proper divisors (1).

18734113 is an equidigital number, since it uses as much as digits as its factorization.

18734113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 18734113 is about 4328.2921574219. The cubic root of 18734113 is about 265.5895879528.

Adding to 18734113 its reverse (31143781), we get a palindrome (49877894).

The spelling of 18734113 in words is "eighteen million, seven hundred thirty-four thousand, one hundred thirteen".