4001844881 has 4 divisors (see below), whose sum is σ = 4025808192. Its totient is φ = 3977881572.

The previous prime is 4001844841. The next prime is 4001844883. The reversal of 4001844881 is 1884481004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4001844881 - 2⁶ = 4001844817 is a prime.

It is a super-2 number, since 2×4001844881² = 32029524903171808322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4001844883) 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, 11981405 + ... + 11981738.

It is an arithmetic number, because the mean of its divisors is an integer number (1006452048).

Almost surely, 2^4001844881 is an apocalyptic number.

It is an amenable number.

4001844881 is a deficient number, since it is larger than the sum of its proper divisors (23963311).

4001844881 is a wasteful number, since it uses less digits than its factorization.

4001844881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23963310.

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 4001844881 is about 63260.1365869534. The cubic root of 4001844881 is about 1587.6450616280.

The spelling of 4001844881 in words is "four billion, one million, eight hundred forty-four thousand, eight hundred eighty-one".