6139418218 has 4 divisors (see below), whose sum is σ = 9209127330. Its totient is φ = 3069709108.

The previous prime is 6139418191. The next prime is 6139418231. The reversal of 6139418218 is 8128149316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4612718889 + 1526699329 = 67917^2 + 39073^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1534854553 + ... + 1534854556.

Almost surely, 2^6139418218 is an apocalyptic number.

6139418218 is a deficient number, since it is larger than the sum of its proper divisors (3069709112).

6139418218 is a wasteful number, since it uses less digits than its factorization.

6139418218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069709111.

The product of its digits is 82944, while the sum is 43.

The square root of 6139418218 is about 78354.4396827646. The cubic root of 6139418218 is about 1831.0873943875.

The spelling of 6139418218 in words is "six billion, one hundred thirty-nine million, four hundred eighteen thousand, two hundred eighteen".