113651819 has 2 divisors, whose sum is σ = 113651820. Its totient is φ = 113651818.

The previous prime is 113651789. The next prime is 113651833. The reversal of 113651819 is 918156311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113651819 - 2¹⁶ = 113586283 is a prime.

It is a super-2 number, since 2×113651819² = 25833471924017522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (113651719) 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, 56825909 + 56825910.

It is an arithmetic number, because the mean of its divisors is an integer number (56825910).

Almost surely, 2^113651819 is an apocalyptic number.

113651819 is a deficient number, since it is larger than the sum of its proper divisors (1).

113651819 is an equidigital number, since it uses as much as digits as its factorization.

113651819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 35.

The square root of 113651819 is about 10660.7607139453. The cubic root of 113651819 is about 484.3866111070.

The spelling of 113651819 in words is "one hundred thirteen million, six hundred fifty-one thousand, eight hundred nineteen".