7887038481 has 27 divisors (see below), whose sum is σ = 13255505211. Its totient is φ = 4505813424.

The previous prime is 7887038449. The next prime is 7887038519. The reversal of 7887038481 is 1848307887.

The square root of 7887038481 is 88809.

It is a perfect power (a square), and thus also a powerful number.

7887038481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7857226881 + 29811600 = 88641^2 + 5460^2 .

It is not a de Polignac number, because 7887038481 - 2⁵ = 7887038449 is a prime.

It is a super-2 number, since 2×7887038481² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7887034481) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1862875 + ... + 1867103.

Almost surely, 2^7887038481 is an apocalyptic number.

7887038481 is the 88809-th square number.

7887038481 is the 44405-th centered octagonal number.

It is an amenable number.

7887038481 is a deficient number, since it is larger than the sum of its proper divisors (5368466730).

7887038481 is an frugal number, since it uses more digits than its factorization.

7887038481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8478 (or 4239 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 54.

The cubic root of 7887038481 is about 1990.5418825980.

The spelling of 7887038481 in words is "seven billion, eight hundred eighty-seven million, thirty-eight thousand, four hundred eighty-one".