6381358542 has 72 divisors (see below), whose sum is σ = 15290537184. Its totient is φ = 1921675392.

The previous prime is 6381358507. The next prime is 6381358549. The reversal of 6381358542 is 2458531836.

6381358542 is a `hidden beast` number, since 63 + 8 + 1 + 3 + 585 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6381358549) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 120658 + ... + 165290.

It is an arithmetic number, because the mean of its divisors is an integer number (212368572).

Almost surely, 2^6381358542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6381358542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7645268592).

6381358542 is an abundant number, since it is smaller than the sum of its proper divisors (8909178642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6381358542 is a wasteful number, since it uses less digits than its factorization.

6381358542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44714 (or 44698 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 6381358542 is about 79883.4059238838. The cubic root of 6381358542 is about 1854.8311557705.

The spelling of 6381358542 in words is "six billion, three hundred eighty-one million, three hundred fifty-eight thousand, five hundred forty-two".