135818838 has 24 divisors (see below), whose sum is σ = 295226568. Its totient is φ = 45126432.

The previous prime is 135818827. The next prime is 135818857. The reversal of 135818838 is 838818531.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 135818793 and 135818802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6420 + ... + 17687.

It is an arithmetic number, because the mean of its divisors is an integer number (12301107).

Almost surely, 2^135818838 is an apocalyptic number.

135818838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

135818838 is an abundant number, since it is smaller than the sum of its proper divisors (159407730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135818838 is a wasteful number, since it uses less digits than its factorization.

135818838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24428 (or 24425 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 135818838 is about 11654.1339446567. The cubic root of 135818838 is about 514.0278742573.

The spelling of 135818838 in words is "one hundred thirty-five million, eight hundred eighteen thousand, eight hundred thirty-eight".