6139863698 has 4 divisors (see below), whose sum is σ = 9209795550. Its totient is φ = 3069931848.

The previous prime is 6139863677. The next prime is 6139863703. The reversal of 6139863698 is 8963689316.

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., 5077560049 + 1062303649 = 71257^2 + 32593^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1534965923 + ... + 1534965926.

Almost surely, 2^6139863698 is an apocalyptic number.

6139863698 is a deficient number, since it is larger than the sum of its proper divisors (3069931852).

6139863698 is a wasteful number, since it uses less digits than its factorization.

6139863698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069931851.

The product of its digits is 10077696, while the sum is 59.

The square root of 6139863698 is about 78357.2823546095. The cubic root of 6139863698 is about 1831.1316815959.

The spelling of 6139863698 in words is "six billion, one hundred thirty-nine million, eight hundred sixty-three thousand, six hundred ninety-eight".