2113957444 has 24 divisors (see below), whose sum is σ = 3743019000. Its totient is φ = 1044578304.

The previous prime is 2113957409. The next prime is 2113957457. The reversal of 2113957444 is 4447593112.

It can be written as a sum of positive squares in 4 ways, for example, as 23639044 + 2090318400 = 4862^2 + 45720^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2113957397 and 2113957406.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 152932 + ... + 166180.

It is an arithmetic number, because the mean of its divisors is an integer number (155959125).

Almost surely, 2^2113957444 is an apocalyptic number.

It is an amenable number.

2113957444 is a deficient number, since it is larger than the sum of its proper divisors (1629061556).

2113957444 is a wasteful number, since it uses less digits than its factorization.

2113957444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13719 (or 13717 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 2113957444 is about 45977.7929439855. The cubic root of 2113957444 is about 1283.4099839002.

The spelling of 2113957444 in words is "two billion, one hundred thirteen million, nine hundred fifty-seven thousand, four hundred forty-four".