6155818994 has 8 divisors (see below), whose sum is σ = 9944015340. Its totient is φ = 2841147216.

The previous prime is 6155818993. The next prime is 6155819011. The reversal of 6155818994 is 4998185516.

It can be written as a sum of positive squares in 2 ways, for example, as 5926690225 + 229128769 = 76985^2 + 15137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6155818993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118381109 + ... + 118381160.

Almost surely, 2^6155818994 is an apocalyptic number.

6155818994 is a deficient number, since it is larger than the sum of its proper divisors (3788196346).

6155818994 is a wasteful number, since it uses less digits than its factorization.

6155818994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236762284.

The product of its digits is 3110400, while the sum is 56.

The square root of 6155818994 is about 78459.0274856884. The cubic root of 6155818994 is about 1832.7164603684.

The spelling of 6155818994 in words is "six billion, one hundred fifty-five million, eight hundred eighteen thousand, nine hundred ninety-four".