4002161786 has 32 divisors (see below), whose sum is σ = 7329768960. Its totient is φ = 1600677936.

The previous prime is 4002161731. The next prime is 4002161803. The reversal of 4002161786 is 6871612004.

4002161786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×4002161786² = 32034597922637419592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94460 + ... + 130103.

It is an arithmetic number, because the mean of its divisors is an integer number (229055280).

Almost surely, 2^4002161786 is an apocalyptic number.

4002161786 is a deficient number, since it is larger than the sum of its proper divisors (3327607174).

4002161786 is a wasteful number, since it uses less digits than its factorization.

4002161786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224658.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 4002161786 is about 63262.6413138117. The cubic root of 4002161786 is about 1587.6869689143.

The spelling of 4002161786 in words is "four billion, two million, one hundred sixty-one thousand, seven hundred eighty-six".