2870019909 has 12 divisors (see below), whose sum is σ = 4150957356. Its totient is φ = 1910866752.

The previous prime is 2870019881. The next prime is 2870019931. The reversal of 2870019909 is 9099100782.

It can be written as a sum of positive squares in 2 ways, for example, as 1064194884 + 1805825025 = 32622^2 + 42495^2 .

It is not a de Polignac number, because 2870019909 - 2⁸ = 2870019653 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2870019409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199312 + ... + 213225.

It is an arithmetic number, because the mean of its divisors is an integer number (345913113).

Almost surely, 2^2870019909 is an apocalyptic number.

It is an amenable number.

2870019909 is a deficient number, since it is larger than the sum of its proper divisors (1280937447).

2870019909 is a wasteful number, since it uses less digits than its factorization.

2870019909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413316 (or 413313 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 2870019909 is about 53572.5667576233. The cubic root of 2870019909 is about 1421.1119883716. Note that the first 3 decimals are identical.

The spelling of 2870019909 in words is "two billion, eight hundred seventy million, nineteen thousand, nine hundred nine".