135840783 has 32 divisors (see below), whose sum is σ = 204825600. Its totient is φ = 79453440.

The previous prime is 135840751. The next prime is 135840787. The reversal of 135840783 is 387048531.

It is not a de Polignac number, because 135840783 - 2⁵ = 135840751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135840787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178123 + ... + 178883.

It is an arithmetic number, because the mean of its divisors is an integer number (6400800).

Almost surely, 2^135840783 is an apocalyptic number.

135840783 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

135840783 is a deficient number, since it is larger than the sum of its proper divisors (68984817).

135840783 is a wasteful number, since it uses less digits than its factorization.

135840783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 135840783 is about 11655.0754180314. The cubic root of 135840783 is about 514.0555575409.

The spelling of 135840783 in words is "one hundred thirty-five million, eight hundred forty thousand, seven hundred eighty-three".