4023145818 has 12 divisors (see below), whose sum is σ = 8716815978. Its totient is φ = 1341048600.

The previous prime is 4023145811. The next prime is 4023145837. The reversal of 4023145818 is 8185413204.

4023145818 is a `hidden beast` number, since 40 + 2 + 31 + 4 + 581 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3980726649 + 42419169 = 63093^2 + 6513^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4023145811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111754033 + ... + 111754068.

Almost surely, 2^4023145818 is an apocalyptic number.

4023145818 is an abundant number, since it is smaller than the sum of its proper divisors (4693670160).

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

4023145818 is a wasteful number, since it uses less digits than its factorization.

4023145818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223508109 (or 223508106 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 4023145818 is about 63428.2730176378. The cubic root of 4023145818 is about 1590.4569731962.

The spelling of 4023145818 in words is "four billion, twenty-three million, one hundred forty-five thousand, eight hundred eighteen".