115901789 has 2 divisors, whose sum is σ = 115901790. Its totient is φ = 115901788.

The previous prime is 115901741. The next prime is 115901791. The reversal of 115901789 is 987109511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115390564 + 511225 = 10742^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 115901789 - 2²⁰ = 114853213 is a prime.

Together with 115901791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115921789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57950894 + 57950895.

It is an arithmetic number, because the mean of its divisors is an integer number (57950895).

Almost surely, 2^115901789 is an apocalyptic number.

It is an amenable number.

115901789 is a deficient number, since it is larger than the sum of its proper divisors (1).

115901789 is an equidigital number, since it uses as much as digits as its factorization.

115901789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 41.

The square root of 115901789 is about 10765.7693176103. The cubic root of 115901789 is about 487.5622207675.

The spelling of 115901789 in words is "one hundred fifteen million, nine hundred one thousand, seven hundred eighty-nine".