135829181 has 4 divisors (see below), whose sum is σ = 136728864. Its totient is φ = 134929500.

The previous prime is 135829171. The next prime is 135829193. The reversal of 135829181 is 181928531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135829181 - 2¹⁰ = 135828157 is a prime.

It is a super-2 number, since 2×135829181² = 36899132822261522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135829121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449615 + ... + 449916.

It is an arithmetic number, because the mean of its divisors is an integer number (34182216).

Almost surely, 2^135829181 is an apocalyptic number.

It is an amenable number.

135829181 is a deficient number, since it is larger than the sum of its proper divisors (899683).

135829181 is an equidigital number, since it uses as much as digits as its factorization.

135829181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899682.

The product of its digits is 17280, while the sum is 38.

The square root of 135829181 is about 11654.5776843264. The cubic root of 135829181 is about 514.0409221659.

The spelling of 135829181 in words is "one hundred thirty-five million, eight hundred twenty-nine thousand, one hundred eighty-one".