6545198371 has 4 divisors (see below), whose sum is σ = 6574032072. Its totient is φ = 6516364672.

The previous prime is 6545198347. The next prime is 6545198383. The reversal of 6545198371 is 1738915456.

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

It is a cyclic number.

It is not a de Polignac number, because 6545198371 - 2¹⁷ = 6545067299 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6545198171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14416510 + ... + 14416963.

It is an arithmetic number, because the mean of its divisors is an integer number (1643508018).

Almost surely, 2^6545198371 is an apocalyptic number.

6545198371 is a deficient number, since it is larger than the sum of its proper divisors (28833701).

6545198371 is a wasteful number, since it uses less digits than its factorization.

6545198371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28833700.

The product of its digits is 907200, while the sum is 49.

The square root of 6545198371 is about 80902.4002795962. The cubic root of 6545198371 is about 1870.5713193283.

The spelling of 6545198371 in words is "six billion, five hundred forty-five million, one hundred ninety-eight thousand, three hundred seventy-one".