6138396772 has 6 divisors (see below), whose sum is σ = 10742194358. Its totient is φ = 3069198384.

The previous prime is 6138396751. The next prime is 6138396787. The reversal of 6138396772 is 2776938316.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3612731236 + 2525665536 = 60106^2 + 50256^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767299593 + ... + 767299600.

Almost surely, 2^6138396772 is an apocalyptic number.

It is an amenable number.

6138396772 is a deficient number, since it is larger than the sum of its proper divisors (4603797586).

6138396772 is a wasteful number, since it uses less digits than its factorization.

6138396772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534599197 (or 1534599195 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 52.

The square root of 6138396772 is about 78347.9212998022. The cubic root of 6138396772 is about 1830.9858396709.

The spelling of 6138396772 in words is "six billion, one hundred thirty-eight million, three hundred ninety-six thousand, seven hundred seventy-two".