135973149 has 8 divisors (see below), whose sum is σ = 195243552. Its totient is φ = 83675760.

The previous prime is 135973109. The next prime is 135973151. The reversal of 135973149 is 941379531.

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

It is not a de Polignac number, because 135973149 - 2¹⁹ = 135448861 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 135973149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135973109) 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, 1743207 + ... + 1743284.

It is an arithmetic number, because the mean of its divisors is an integer number (24405444).

Almost surely, 2^135973149 is an apocalyptic number.

It is an amenable number.

135973149 is a deficient number, since it is larger than the sum of its proper divisors (59270403).

135973149 is a wasteful number, since it uses less digits than its factorization.

135973149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486507.

The product of its digits is 102060, while the sum is 42.

The square root of 135973149 is about 11660.7525057348. The cubic root of 135973149 is about 514.2224720404. Note that the first 3 decimals are identical.

The spelling of 135973149 in words is "one hundred thirty-five million, nine hundred seventy-three thousand, one hundred forty-nine".