135901649 has 8 divisors (see below), whose sum is σ = 146802432. Its totient is φ = 125064720.

The previous prime is 135901643. The next prime is 135901651. The reversal of 135901649 is 946109531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135901649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135901643) 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, 11489 + ... + 20094.

It is an arithmetic number, because the mean of its divisors is an integer number (18350304).

Almost surely, 2^135901649 is an apocalyptic number.

It is an amenable number.

135901649 is a deficient number, since it is larger than the sum of its proper divisors (10900783).

135901649 is a wasteful number, since it uses less digits than its factorization.

135901649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31927.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 135901649 is about 11657.6862627195. The cubic root of 135901649 is about 514.1323234745.

The spelling of 135901649 in words is "one hundred thirty-five million, nine hundred one thousand, six hundred forty-nine".