2139925926 has 16 divisors (see below), whose sum is σ = 4287380400. Its totient is φ = 712053888.

The previous prime is 2139925913. The next prime is 2139925927. The reversal of 2139925926 is 6295299312.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139925927) 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 7 ways as a sum of consecutive naturals, for example, 309991 + ... + 316818.

It is an arithmetic number, because the mean of its divisors is an integer number (267961275).

Almost surely, 2^2139925926 is an apocalyptic number.

2139925926 is an abundant number, since it is smaller than the sum of its proper divisors (2147454474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2139925926 is a wasteful number, since it uses less digits than its factorization.

2139925926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627383.

The product of its digits is 524880, while the sum is 48.

The square root of 2139925926 is about 46259.3333933813. Note that the first 4 decimals coincide. The cubic root of 2139925926 is about 1288.6438738179.

The spelling of 2139925926 in words is "two billion, one hundred thirty-nine million, nine hundred twenty-five thousand, nine hundred twenty-six".