6138641964 has 48 divisors (see below), whose sum is σ = 17628923648. Its totient is φ = 1618982208.

The previous prime is 6138641959. The next prime is 6138642001. The reversal of 6138641964 is 4691468316.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2809642 + ... + 2811825.

Almost surely, 2^6138641964 is an apocalyptic number.

It is an amenable number.

6138641964 is an abundant number, since it is smaller than the sum of its proper divisors (11490281684).

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

6138641964 is a wasteful number, since it uses less digits than its factorization.

6138641964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5621494 (or 5621492 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 6138641964 is about 78349.4860480910. The cubic root of 6138641964 is about 1831.0102183004.

The spelling of 6138641964 in words is "six billion, one hundred thirty-eight million, six hundred forty-one thousand, nine hundred sixty-four".