4038466981 has 4 divisors (see below), whose sum is σ = 4043386764. Its totient is φ = 4033547200.

The previous prime is 4038466969. The next prime is 4038467021. The reversal of 4038466981 is 1896648304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2607736356 + 1430730625 = 51066^2 + 37825^2 .

It is a cyclic number.

It is not a de Polignac number, because 4038466981 - 2¹⁷ = 4038335909 is a prime.

It is a super-2 number, since 2×4038466981² = 32618431113254508722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4038466961) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2458660 + ... + 2460301.

It is an arithmetic number, because the mean of its divisors is an integer number (1010846691).

Almost surely, 2^4038466981 is an apocalyptic number.

It is an amenable number.

4038466981 is a deficient number, since it is larger than the sum of its proper divisors (4919783).

4038466981 is an equidigital number, since it uses as much as digits as its factorization.

4038466981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4919782.

The product of its (nonzero) digits is 995328, while the sum is 49.

The square root of 4038466981 is about 63548.9337518734. The cubic root of 4038466981 is about 1592.4733706599.

The spelling of 4038466981 in words is "four billion, thirty-eight million, four hundred sixty-six thousand, nine hundred eighty-one".