2122389956 has 24 divisors (see below), whose sum is σ = 3967480440. Its totient is φ = 989929472.

The previous prime is 2122389947. The next prime is 2122389979. The reversal of 2122389956 is 6599832212.

It can be written as a sum of positive squares in 4 ways, for example, as 313600 + 2122076356 = 560^2 + 46066^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2122389956.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130421 + ... + 145788.

It is an arithmetic number, because the mean of its divisors is an integer number (165311685).

Almost surely, 2^2122389956 is an apocalyptic number.

It is an amenable number.

2122389956 is a deficient number, since it is larger than the sum of its proper divisors (1845090484).

2122389956 is a wasteful number, since it uses less digits than its factorization.

2122389956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276343 (or 276341 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 2122389956 is about 46069.4036861777. The cubic root of 2122389956 is about 1285.1142143379.

The spelling of 2122389956 in words is "two billion, one hundred twenty-two million, three hundred eighty-nine thousand, nine hundred fifty-six".