6698450189 has 16 divisors (see below), whose sum is σ = 7049542320. Its totient is φ = 6356313600.

The previous prime is 6698450167. The next prime is 6698450197. The reversal of 6698450189 is 9810548966.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 58644964 + 6639805225 = 7658^2 + 81485^2 .

It is a cyclic number.

It is not a de Polignac number, because 6698450189 - 2²⁴ = 6681672973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6698450119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392927 + ... + 409619.

It is an arithmetic number, because the mean of its divisors is an integer number (440596395).

Almost surely, 2^6698450189 is an apocalyptic number.

It is an amenable number.

6698450189 is a deficient number, since it is larger than the sum of its proper divisors (351092131).

6698450189 is a wasteful number, since it uses less digits than its factorization.

6698450189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16960.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The square root of 6698450189 is about 81844.0601937612. The cubic root of 6698450189 is about 1885.0582611388.

The spelling of 6698450189 in words is "six billion, six hundred ninety-eight million, four hundred fifty thousand, one hundred eighty-nine".