135786263 has 4 divisors (see below), whose sum is σ = 139456200. Its totient is φ = 132116328.

The previous prime is 135786253. The next prime is 135786269. The reversal of 135786263 is 362687531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135786263 - 2¹² = 135782167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135786263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135786269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1834913 + ... + 1834986.

It is an arithmetic number, because the mean of its divisors is an integer number (34864050).

Almost surely, 2^135786263 is an apocalyptic number.

135786263 is a deficient number, since it is larger than the sum of its proper divisors (3669937).

135786263 is an equidigital number, since it uses as much as digits as its factorization.

135786263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669936.

The product of its digits is 181440, while the sum is 41.

The square root of 135786263 is about 11652.7362880999. The cubic root of 135786263 is about 513.9867758916.

The spelling of 135786263 in words is "one hundred thirty-five million, seven hundred eighty-six thousand, two hundred sixty-three".