2101671939 has 16 divisors (see below), whose sum is σ = 2899390464. Its totient is φ = 1352745600.

The previous prime is 2101671919. The next prime is 2101671953. The reversal of 2101671939 is 9391761012.

It is a happy number.

It is not a de Polignac number, because 2101671939 - 2⁷ = 2101671811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101671897 and 2101671906.

It is not an unprimeable number, because it can be changed into a prime (2101671919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13867 + ... + 66299.

It is an arithmetic number, because the mean of its divisors is an integer number (181211904).

Almost surely, 2^2101671939 is an apocalyptic number.

2101671939 is a deficient number, since it is larger than the sum of its proper divisors (797718525).

2101671939 is a wasteful number, since it uses less digits than its factorization.

2101671939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52898.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 2101671939 is about 45843.9956700984. The cubic root of 2101671939 is about 1280.9189240815.

The spelling of 2101671939 in words is "two billion, one hundred one million, six hundred seventy-one thousand, nine hundred thirty-nine".