6481938061 has 4 divisors (see below), whose sum is σ = 6485701792. Its totient is φ = 6478174332.

The previous prime is 6481938059. The next prime is 6481938077. The reversal of 6481938061 is 1608391846.

6481938061 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1608391846 = 2 ⋅804195923.

It is a cyclic number.

It is not a de Polignac number, because 6481938061 - 2¹ = 6481938059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6481938461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1879281 + ... + 1882726.

It is an arithmetic number, because the mean of its divisors is an integer number (1621425448).

Almost surely, 2^6481938061 is an apocalyptic number.

It is an amenable number.

6481938061 is a deficient number, since it is larger than the sum of its proper divisors (3763731).

6481938061 is a wasteful number, since it uses less digits than its factorization.

6481938061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3763730.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 6481938061 is about 80510.4841682125. The cubic root of 6481938061 is about 1864.5253494327.

The spelling of 6481938061 in words is "six billion, four hundred eighty-one million, nine hundred thirty-eight thousand, sixty-one".