4023681994 has 16 divisors (see below), whose sum is σ = 6202499688. Its totient is φ = 1956249792.

The previous prime is 4023681913. The next prime is 4023681997. The reversal of 4023681994 is 4991863204.

It can be written as a sum of positive squares in 4 ways, for example, as 2893041369 + 1130640625 = 53787^2 + 33625^2 .

It is not an unprimeable number, because it can be changed into a prime (4023681997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109224 + ... + 141340.

Almost surely, 2^4023681994 is an apocalyptic number.

4023681994 is a deficient number, since it is larger than the sum of its proper divisors (2178817694).

4023681994 is a wasteful number, since it uses less digits than its factorization.

4023681994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33849.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 4023681994 is about 63432.4995093209. The cubic root of 4023681994 is about 1590.5276249544.

The spelling of 4023681994 in words is "four billion, twenty-three million, six hundred eighty-one thousand, nine hundred ninety-four".