4045381806 has 16 divisors (see below), whose sum is σ = 8091560448. Its totient is φ = 1348327800.

The previous prime is 4045381793. The next prime is 4045381831. The reversal of 4045381806 is 6081835404.

It is a super-2 number, since 2×4045381806² = 32730227912631643272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48121 + ... + 102011.

It is an arithmetic number, because the mean of its divisors is an integer number (505722528).

Almost surely, 2^4045381806 is an apocalyptic number.

4045381806 is an abundant number, since it is smaller than the sum of its proper divisors (4046178642).

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

4045381806 is a wasteful number, since it uses less digits than its factorization.

4045381806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66407.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 4045381806 is about 63603.3159984603. The cubic root of 4045381806 is about 1593.3817513088.

The spelling of 4045381806 in words is "four billion, forty-five million, three hundred eighty-one thousand, eight hundred six".