6538507197 has 16 divisors (see below), whose sum is σ = 9100362240. Its totient is φ = 4170988800.

The previous prime is 6538507193. The next prime is 6538507219. The reversal of 6538507197 is 7917058356.

It is not a de Polignac number, because 6538507197 - 2² = 6538507193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6538507193) 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, 386704 + ... + 403257.

It is an arithmetic number, because the mean of its divisors is an integer number (568772640).

Almost surely, 2^6538507197 is an apocalyptic number.

It is an amenable number.

6538507197 is a deficient number, since it is larger than the sum of its proper divisors (2561855043).

6538507197 is a wasteful number, since it uses less digits than its factorization.

6538507197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790084.

The product of its (nonzero) digits is 1587600, while the sum is 51.

The square root of 6538507197 is about 80861.0363339476. The cubic root of 6538507197 is about 1869.9336719494.

The spelling of 6538507197 in words is "six billion, five hundred thirty-eight million, five hundred seven thousand, one hundred ninety-seven".