135782719 has 2 divisors, whose sum is σ = 135782720. Its totient is φ = 135782718.

The previous prime is 135782687. The next prime is 135782729. The reversal of 135782719 is 917287531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135782719 - 2⁵ = 135782687 is a prime.

It is a super-2 number, since 2×135782719² = 36873893558065922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135782729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67891359 + 67891360.

It is an arithmetic number, because the mean of its divisors is an integer number (67891360).

Almost surely, 2^135782719 is an apocalyptic number.

135782719 is a deficient number, since it is larger than the sum of its proper divisors (1).

135782719 is an equidigital number, since it uses as much as digits as its factorization.

135782719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 43.

The square root of 135782719 is about 11652.5842198201. The cubic root of 135782719 is about 513.9823041948.

The spelling of 135782719 in words is "one hundred thirty-five million, seven hundred eighty-two thousand, seven hundred nineteen".