4020375881 has 4 divisors (see below), whose sum is σ = 4052032512. Its totient is φ = 3988719252.

The previous prime is 4020375839. The next prime is 4020375893. The reversal of 4020375881 is 1885730204.

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 4020375881 - 2¹⁸ = 4020113737 is a prime.

It is a super-2 number, since 2×4020375881² = 32326844449053052322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020374881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15828125 + ... + 15828378.

It is an arithmetic number, because the mean of its divisors is an integer number (1013008128).

Almost surely, 2^4020375881 is an apocalyptic number.

It is an amenable number.

4020375881 is a deficient number, since it is larger than the sum of its proper divisors (31656631).

4020375881 is a wasteful number, since it uses less digits than its factorization.

4020375881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31656630.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 4020375881 is about 63406.4340662681. The cubic root of 4020375881 is about 1590.0918793734.

The spelling of 4020375881 in words is "four billion, twenty million, three hundred seventy-five thousand, eight hundred eighty-one".