2011444040 has 16 divisors (see below), whose sum is σ = 4525749180. Its totient is φ = 804577600.

The previous prime is 2011444037. The next prime is 2011444069. The reversal of 2011444040 is 404441102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1958416516 + 53027524 = 44254^2 + 7282^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25143011 + ... + 25143090.

Almost surely, 2^2011444040 is an apocalyptic number.

2011444040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011444040 is an abundant number, since it is smaller than the sum of its proper divisors (2514305140).

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

2011444040 is a wasteful number, since it uses less digits than its factorization.

2011444040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50286112 (or 50286108 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2011444040 is about 44849.1252980479. The cubic root of 2011444040 is about 1262.3195787008.

Adding to 2011444040 its reverse (404441102), we get a palindrome (2415885142).

The spelling of 2011444040 in words is "two billion, eleven million, four hundred forty-four thousand, forty".