6849950189 has 4 divisors (see below), whose sum is σ = 6917771580. Its totient is φ = 6782128800.

The previous prime is 6849950143. The next prime is 6849950197. The reversal of 6849950189 is 9810599486.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3512577289 + 3337372900 = 59267^2 + 57770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6849950189 is a prime.

It is a super-2 number, since 2×6849950189² = 93843635183562271442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6849950089) 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, 33910544 + ... + 33910745.

It is an arithmetic number, because the mean of its divisors is an integer number (1729442895).

Almost surely, 2^6849950189 is an apocalyptic number.

It is an amenable number.

6849950189 is a deficient number, since it is larger than the sum of its proper divisors (67821391).

6849950189 is a wasteful number, since it uses less digits than its factorization.

6849950189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67821390.

The product of its (nonzero) digits is 5598720, while the sum is 59.

The square root of 6849950189 is about 82764.4258664313. The cubic root of 6849950189 is about 1899.1640079365.

The spelling of 6849950189 in words is "six billion, eight hundred forty-nine million, nine hundred fifty thousand, one hundred eighty-nine".