135819671 has 16 divisors (see below), whose sum is σ = 150464160. Its totient is φ = 121806720.

The previous prime is 135819667. The next prime is 135819709. The reversal of 135819671 is 176918531.

It is a cyclic number.

It is not a de Polignac number, because 135819671 - 2² = 135819667 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 (135819641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127481 + ... + 128541.

It is an arithmetic number, because the mean of its divisors is an integer number (9404010).

Almost surely, 2^135819671 is an apocalyptic number.

135819671 is a deficient number, since it is larger than the sum of its proper divisors (14644489).

135819671 is a wasteful number, since it uses less digits than its factorization.

135819671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346.

The product of its digits is 45360, while the sum is 41.

The square root of 135819671 is about 11654.1696829933. The cubic root of 135819671 is about 514.0289251286.

The spelling of 135819671 in words is "one hundred thirty-five million, eight hundred nineteen thousand, six hundred seventy-one".