3804518121887 has 32 divisors (see below), whose sum is σ = 4373962020864. Its totient is φ = 3241637884800.

The previous prime is 3804518121871. The next prime is 3804518121889. The reversal of 3804518121887 is 7881218154083.

It is a happy number.

It is not a de Polignac number, because 3804518121887 - 2⁴ = 3804518121871 is a prime.

It is a super-3 number, since 3×3804518121887³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3804518121889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1181158937 + ... + 1181162157.

It is an arithmetic number, because the mean of its divisors is an integer number (136686313152).

Almost surely, 2^{3804518121887} is an apocalyptic number.

3804518121887 is a deficient number, since it is larger than the sum of its proper divisors (569443898977).

3804518121887 is a wasteful number, since it uses less digits than its factorization.

3804518121887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4959.

The product of its (nonzero) digits is 3440640, while the sum is 56.

The spelling of 3804518121887 in words is "three trillion, eight hundred four billion, five hundred eighteen million, one hundred twenty-one thousand, eight hundred eighty-seven".