6381641481 has 8 divisors (see below), whose sum is σ = 8706735840. Its totient is φ = 4155487392.

The previous prime is 6381641447. The next prime is 6381641533. The reversal of 6381641481 is 1841461836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6381641481 - 2¹⁰ = 6381640457 is a prime.

It is a super-2 number, since 2×6381641481² = 81450695984039746722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6381641401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24734916 + ... + 24735173.

It is an arithmetic number, because the mean of its divisors is an integer number (1088341980).

Almost surely, 2^6381641481 is an apocalyptic number.

It is an amenable number.

6381641481 is a deficient number, since it is larger than the sum of its proper divisors (2325094359).

6381641481 is a wasteful number, since it uses less digits than its factorization.

6381641481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49470135.

The product of its digits is 110592, while the sum is 42.

The square root of 6381641481 is about 79885.1768540322. The cubic root of 6381641481 is about 1854.8585687586.

The spelling of 6381641481 in words is "six billion, three hundred eighty-one million, six hundred forty-one thousand, four hundred eighty-one".