6185990394 has 12 divisors (see below), whose sum is σ = 13402979226. Its totient is φ = 2061996792.

The previous prime is 6185990359. The next prime is 6185990401. The reversal of 6185990394 is 4930995816.

6185990394 is a `hidden beast` number, since 6 + 18 + 599 + 0 + 39 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6133239225 + 52751169 = 78315^2 + 7263^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6185990394.

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 in 5 ways as a sum of consecutive naturals, for example, 171833049 + ... + 171833084.

Almost surely, 2^6185990394 is an apocalyptic number.

6185990394 is an abundant number, since it is smaller than the sum of its proper divisors (7216988832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6185990394 is a wasteful number, since it uses less digits than its factorization.

6185990394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343666141 (or 343666138 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The square root of 6185990394 is about 78651.0673417723. The cubic root of 6185990394 is about 1835.7058013945.

The spelling of 6185990394 in words is "six billion, one hundred eighty-five million, nine hundred ninety thousand, three hundred ninety-four".