2120862289 has 48 divisors (see below), whose sum is σ = 2784996480. Its totient is φ = 1576972800.

The previous prime is 2120862277. The next prime is 2120862349. The reversal of 2120862289 is 9822680212.

It is a happy number.

It is not a de Polignac number, because 2120862289 - 2⁹ = 2120861777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120862209) 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 47 ways as a sum of consecutive naturals, for example, 3528589 + ... + 3529189.

It is an arithmetic number, because the mean of its divisors is an integer number (58020760).

Almost surely, 2^2120862289 is an apocalyptic number.

It is an amenable number.

2120862289 is a deficient number, since it is larger than the sum of its proper divisors (664134191).

2120862289 is a wasteful number, since it uses less digits than its factorization.

2120862289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 2120862289 is about 46052.8206410856. The cubic root of 2120862289 is about 1284.8058045043.

The spelling of 2120862289 in words is "two billion, one hundred twenty million, eight hundred sixty-two thousand, two hundred eighty-nine".