135788893 has 2 divisors, whose sum is σ = 135788894. Its totient is φ = 135788892.

The previous prime is 135788881. The next prime is 135788909. The reversal of 135788893 is 398887531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116057529 + 19731364 = 10773^2 + 4442^2 .

It is a cyclic number.

It is not a de Polignac number, because 135788893 - 2⁹ = 135788381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135788893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135788693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67894446 + 67894447.

It is an arithmetic number, because the mean of its divisors is an integer number (67894447).

Almost surely, 2^135788893 is an apocalyptic number.

It is an amenable number.

135788893 is a deficient number, since it is larger than the sum of its proper divisors (1).

135788893 is an equidigital number, since it uses as much as digits as its factorization.

135788893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 52.

The square root of 135788893 is about 11652.8491365846. The cubic root of 135788893 is about 513.9900942844.

The spelling of 135788893 in words is "one hundred thirty-five million, seven hundred eighty-eight thousand, eight hundred ninety-three".