2123755936 has 48 divisors (see below), whose sum is σ = 4323352320. Its totient is φ = 1025879040.

The previous prime is 2123755903. The next prime is 2123755937. The reversal of 2123755936 is 6395573212.

It is a junction number, because it is equal to n+sod(n) for n = 2123755892 and 2123755901.

It is not an unprimeable number, because it can be changed into a prime (2123755937) 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 7 ways as a sum of consecutive naturals, for example, 731640 + ... + 734536.

It is an arithmetic number, because the mean of its divisors is an integer number (90069840).

Almost surely, 2^2123755936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123755936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2161676160).

2123755936 is an abundant number, since it is smaller than the sum of its proper divisors (2199596384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123755936 is a wasteful number, since it uses less digits than its factorization.

2123755936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677 (or 3669 counting only the distinct ones).

The product of its digits is 340200, while the sum is 43.

The square root of 2123755936 is about 46084.2265422780. The cubic root of 2123755936 is about 1285.3898570304.

The spelling of 2123755936 in words is "two billion, one hundred twenty-three million, seven hundred fifty-five thousand, nine hundred thirty-six".