2159067709 has 12 divisors (see below), whose sum is σ = 2194423644. Its totient is φ = 2124263232.

The previous prime is 2159067689. The next prime is 2159067737. The reversal of 2159067709 is 9077609512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1623284100 + 535783609 = 40290^2 + 23147^2 .

It is not a de Polignac number, because 2159067709 - 2¹¹ = 2159065661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159067739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2851759 + ... + 2852515.

It is an arithmetic number, because the mean of its divisors is an integer number (182868637).

Almost surely, 2^2159067709 is an apocalyptic number.

It is an amenable number.

2159067709 is a deficient number, since it is larger than the sum of its proper divisors (35355935).

2159067709 is an frugal number, since it uses more digits than its factorization.

2159067709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372 (or 1293 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 46.

The square root of 2159067709 is about 46465.7692177801. The cubic root of 2159067709 is about 1292.4748094713.

The spelling of 2159067709 in words is "two billion, one hundred fifty-nine million, sixty-seven thousand, seven hundred nine".