6138774556 has 12 divisors (see below), whose sum is σ = 10770907392. Its totient is φ = 3061372448.

The previous prime is 6138774539. The next prime is 6138774563. The reversal of 6138774556 is 6554778316.

It is a happy number.

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, 2001985 + ... + 2005048.

It is an arithmetic number, because the mean of its divisors is an integer number (897575616).

Almost surely, 2^6138774556 is an apocalyptic number.

It is an amenable number.

6138774556 is a deficient number, since it is larger than the sum of its proper divisors (4632132836).

6138774556 is a wasteful number, since it uses less digits than its factorization.

6138774556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007420 (or 4007418 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 52.

The square root of 6138774556 is about 78350.3322009550. The cubic root of 6138774556 is about 1831.0234012140.

The spelling of 6138774556 in words is "six billion, one hundred thirty-eight million, seven hundred seventy-four thousand, five hundred fifty-six".