8142904881 has 48 divisors (see below), whose sum is σ = 12338027520. Its totient is φ = 5169070080.

The previous prime is 8142904873. The next prime is 8142904901. The reversal of 8142904881 is 1884092418.

8142904881 is a `hidden beast` number, since 81 + 4 + 2 + 90 + 488 + 1 = 666.

It is not a de Polignac number, because 8142904881 - 2³ = 8142904873 is a prime.

It is a super-2 number, since 2×8142904881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8142904801) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 5222380 + ... + 5223938.

It is an arithmetic number, because the mean of its divisors is an integer number (257042240).

Almost surely, 2^8142904881 is an apocalyptic number.

It is an amenable number.

8142904881 is a deficient number, since it is larger than the sum of its proper divisors (4195122639).

8142904881 is a wasteful number, since it uses less digits than its factorization.

8142904881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 8142904881 is about 90238.0456404060. The cubic root of 8142904881 is about 2011.8385264641.

The spelling of 8142904881 in words is "eight billion, one hundred forty-two million, nine hundred four thousand, eight hundred eighty-one".