2135989545 has 16 divisors (see below), whose sum is σ = 3426904320. Its totient is φ = 1136087424.

The previous prime is 2135989523. The next prime is 2135989549. The reversal of 2135989545 is 5459895312.

It is a happy number.

It is not a de Polignac number, because 2135989545 - 2²¹ = 2133892393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2135989549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188500 + ... + 199509.

It is an arithmetic number, because the mean of its divisors is an integer number (214181520).

Almost surely, 2^2135989545 is an apocalyptic number.

It is an amenable number.

2135989545 is a deficient number, since it is larger than the sum of its proper divisors (1290914775).

2135989545 is a wasteful number, since it uses less digits than its factorization.

2135989545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388384.

The product of its digits is 1944000, while the sum is 51.

The square root of 2135989545 is about 46216.7669250024. The cubic root of 2135989545 is about 1287.8532379184.

The spelling of 2135989545 in words is "two billion, one hundred thirty-five million, nine hundred eighty-nine thousand, five hundred forty-five".