4118781811 has 16 divisors (see below), whose sum is σ = 4514862240. Its totient is φ = 3739993600.

The previous prime is 4118781773. The next prime is 4118781817. The reversal of 4118781811 is 1181878114.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4118781811 - 2¹⁵ = 4118749043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4118781817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 923136 + ... + 927586.

It is an arithmetic number, because the mean of its divisors is an integer number (282178890).

Almost surely, 2^4118781811 is an apocalyptic number.

4118781811 is a deficient number, since it is larger than the sum of its proper divisors (396080429).

4118781811 is a wasteful number, since it uses less digits than its factorization.

4118781811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6374.

The product of its digits is 14336, while the sum is 40.

The square root of 4118781811 is about 64177.7361006136. The cubic root of 4118781811 is about 1602.9608989341.

The spelling of 4118781811 in words is "four billion, one hundred eighteen million, seven hundred eighty-one thousand, eight hundred eleven".