4115487981 has 16 divisors (see below), whose sum is σ = 6012546048. Its totient is φ = 2483242800.

The previous prime is 4115487977. The next prime is 4115488021. The reversal of 4115487981 is 1897845114.

It is not a de Polignac number, because 4115487981 - 2² = 4115487977 is a prime.

It is a super-2 number, since 2×4115487981² = 33874482643510912722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4115487981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4115587981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267205 + ... + 282186.

It is an arithmetic number, because the mean of its divisors is an integer number (375784128).

Almost surely, 2^4115487981 is an apocalyptic number.

It is an amenable number.

4115487981 is a deficient number, since it is larger than the sum of its proper divisors (1897058067).

4115487981 is a wasteful number, since it uses less digits than its factorization.

4115487981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549632.

The product of its digits is 322560, while the sum is 48.

The square root of 4115487981 is about 64152.0691872055. The cubic root of 4115487981 is about 1602.5334838210.

The spelling of 4115487981 in words is "four billion, one hundred fifteen million, four hundred eighty-seven thousand, nine hundred eighty-one".