2139349091 has 24 divisors (see below), whose sum is σ = 2433887232. Its totient is φ = 1877079600.

The previous prime is 2139349031. The next prime is 2139349103. The reversal of 2139349091 is 1909439312.

It is not a de Polignac number, because 2139349091 - 2¹⁸ = 2139086947 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (2139349001) 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 23 ways as a sum of consecutive naturals, for example, 2411450 + ... + 2412336.

It is an arithmetic number, because the mean of its divisors is an integer number (101411968).

Almost surely, 2^2139349091 is an apocalyptic number.

2139349091 is a deficient number, since it is larger than the sum of its proper divisors (294538141).

2139349091 is a wasteful number, since it uses less digits than its factorization.

2139349091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 2139349091 is about 46253.0981773113. The cubic root of 2139349091 is about 1288.5280751540.

The spelling of 2139349091 in words is "two billion, one hundred thirty-nine million, three hundred forty-nine thousand, ninety-one".