2011383738 has 320 divisors, whose sum is σ = 6010583040. Its totient is φ = 487928448.

The previous prime is 2011383733. The next prime is 2011383811. The reversal of 2011383738 is 8373831102.

2011383738 is a `hidden beast` number, since 201 + 1 + 383 + 73 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (2011383733) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 12044131 + ... + 12044297.

It is an arithmetic number, because the mean of its divisors is an integer number (18783072).

Almost surely, 2^2011383738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011383738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3005291520).

2011383738 is an abundant number, since it is smaller than the sum of its proper divisors (3999199302).

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

2011383738 is a wasteful number, since it uses less digits than its factorization.

2011383738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2011383738 is about 44848.4530167987. The cubic root of 2011383738 is about 1262.3069640229.

The spelling of 2011383738 in words is "two billion, eleven million, three hundred eighty-three thousand, seven hundred thirty-eight".