2139596955 has 24 divisors (see below), whose sum is σ = 3715174320. Its totient is φ = 1139106240.

The previous prime is 2139596951. The next prime is 2139596957. The reversal of 2139596955 is 5596959312.

It is a happy number.

It is not a de Polignac number, because 2139596955 - 2² = 2139596951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2139596951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15940 + ... + 67329.

It is an arithmetic number, because the mean of its divisors is an integer number (154798930).

Almost surely, 2^2139596955 is an apocalyptic number.

2139596955 is a deficient number, since it is larger than the sum of its proper divisors (1575577365).

2139596955 is a wasteful number, since it uses less digits than its factorization.

2139596955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83851 (or 83848 counting only the distinct ones).

The product of its digits is 3280500, while the sum is 54.

The square root of 2139596955 is about 46255.7775310285. Note that the first 3 decimals coincide. The cubic root of 2139596955 is about 1288.5778359886.

The spelling of 2139596955 in words is "two billion, one hundred thirty-nine million, five hundred ninety-six thousand, nine hundred fifty-five".