4081642786 has 16 divisors (see below), whose sum is σ = 6596667000. Its totient is φ = 1882908288.

The previous prime is 4081642771. The next prime is 4081642793. The reversal of 4081642786 is 6872461804.

4081642786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2369255625 + 1712387161 = 48675^2 + 41381^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16740 + ... + 91888.

Almost surely, 2^4081642786 is an apocalyptic number.

4081642786 is a deficient number, since it is larger than the sum of its proper divisors (2515024214).

4081642786 is a wasteful number, since it uses less digits than its factorization.

4081642786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77253.

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 4081642786 is about 63887.7358027345. The cubic root of 4081642786 is about 1598.1283826026.

The spelling of 4081642786 in words is "four billion, eighty-one million, six hundred forty-two thousand, seven hundred eighty-six".