6438489542 has 8 divisors (see below), whose sum is σ = 9674188776. Its totient is φ = 3213759952.

The previous prime is 6438489527. The next prime is 6438489569. The reversal of 6438489542 is 2459848346.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2740943 + ... + 2743290.

It is an arithmetic number, because the mean of its divisors is an integer number (1209273597).

Almost surely, 2^6438489542 is an apocalyptic number.

6438489542 is a deficient number, since it is larger than the sum of its proper divisors (3235699234).

6438489542 is a wasteful number, since it uses less digits than its factorization.

6438489542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5484822.

The product of its digits is 6635520, while the sum is 53.

The square root of 6438489542 is about 80240.1990401320. The cubic root of 6438489542 is about 1860.3500268145.

The spelling of 6438489542 in words is "six billion, four hundred thirty-eight million, four hundred eighty-nine thousand, five hundred forty-two".