4001811886 has 16 divisors (see below), whose sum is σ = 6363826560. Its totient is φ = 1884025440.

The previous prime is 4001811871. The next prime is 4001811907. The reversal of 4001811886 is 6881181004.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869941 + ... + 874528.

It is an arithmetic number, because the mean of its divisors is an integer number (397739160).

Almost surely, 2^4001811886 is an apocalyptic number.

4001811886 is a deficient number, since it is larger than the sum of its proper divisors (2362014674).

4001811886 is a wasteful number, since it uses less digits than its factorization.

4001811886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744539.

The product of its (nonzero) digits is 12288, while the sum is 37.

The square root of 4001811886 is about 63259.8757981708. The cubic root of 4001811886 is about 1587.6406982661.

The spelling of 4001811886 in words is "four billion, one million, eight hundred eleven thousand, eight hundred eighty-six".