135981853 has 8 divisors (see below), whose sum is σ = 156094272. Its totient is φ = 116041056.

The previous prime is 135981851. The next prime is 135981863. The reversal of 135981853 is 358189531.

135981853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135981853 - 2¹ = 135981851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135981851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41200 + ... + 44377.

It is an arithmetic number, because the mean of its divisors is an integer number (19511784).

Almost surely, 2^135981853 is an apocalyptic number.

It is an amenable number.

135981853 is a deficient number, since it is larger than the sum of its proper divisors (20112419).

135981853 is an equidigital number, since it uses as much as digits as its factorization.

135981853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85811.

The product of its digits is 129600, while the sum is 43.

The square root of 135981853 is about 11661.1257175283. The cubic root of 135981853 is about 514.2334440520.

It can be divided in two parts, 13598 and 1853, that added together give a palindrome (15451).

The spelling of 135981853 in words is "one hundred thirty-five million, nine hundred eighty-one thousand, eight hundred fifty-three".