6537381899 has 8 divisors (see below), whose sum is σ = 6701932608. Its totient is φ = 6373074240.

The previous prime is 6537381887. The next prime is 6537381919. The reversal of 6537381899 is 9981837356.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6537381899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6537384899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5672 + ... + 114485.

It is an arithmetic number, because the mean of its divisors is an integer number (837741576).

Almost surely, 2^6537381899 is an apocalyptic number.

6537381899 is a deficient number, since it is larger than the sum of its proper divisors (164550709).

6537381899 is a wasteful number, since it uses less digits than its factorization.

6537381899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121525.

The product of its digits is 9797760, while the sum is 59.

The square root of 6537381899 is about 80854.0778130578. The cubic root of 6537381899 is about 1869.8263919396.

The spelling of 6537381899 in words is "six billion, five hundred thirty-seven million, three hundred eighty-one thousand, eight hundred ninety-nine".