135918901 has 2 divisors, whose sum is σ = 135918902. Its totient is φ = 135918900.

The previous prime is 135918823. The next prime is 135918907. The reversal of 135918901 is 109819531.

It is a happy number.

135918901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83283876 + 52635025 = 9126^2 + 7255^2 .

It is a cyclic number.

It is not a de Polignac number, because 135918901 - 2²¹ = 133821749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135918907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67959450 + 67959451.

It is an arithmetic number, because the mean of its divisors is an integer number (67959451).

Almost surely, 2^135918901 is an apocalyptic number.

It is an amenable number.

135918901 is a deficient number, since it is larger than the sum of its proper divisors (1).

135918901 is an equidigital number, since it uses as much as digits as its factorization.

135918901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 135918901 is about 11658.4261802355. The cubic root of 135918901 is about 514.1540780194.

The spelling of 135918901 in words is "one hundred thirty-five million, nine hundred eighteen thousand, nine hundred one".