113688019 has 2 divisors, whose sum is σ = 113688020. Its totient is φ = 113688018.

The previous prime is 113687999. The next prime is 113688037. The reversal of 113688019 is 910886311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113688019 - 2¹³ = 113679827 is a prime.

It is a super-2 number, since 2×113688019² = 25849931328288722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113688059) 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, 56844009 + 56844010.

It is an arithmetic number, because the mean of its divisors is an integer number (56844010).

Almost surely, 2^113688019 is an apocalyptic number.

113688019 is a deficient number, since it is larger than the sum of its proper divisors (1).

113688019 is an equidigital number, since it uses as much as digits as its factorization.

113688019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 113688019 is about 10662.4583938227. The cubic root of 113688019 is about 484.4380340527.

The spelling of 113688019 in words is "one hundred thirteen million, six hundred eighty-eight thousand, nineteen".