6393137645 has 8 divisors (see below), whose sum is σ = 7677915000. Its totient is φ = 5110410240.

The previous prime is 6393137581. The next prime is 6393137701. The reversal of 6393137645 is 5467313936.

It can be written as a sum of positive squares in 4 ways, for example, as 2214549481 + 4178588164 = 47059^2 + 64642^2 .

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

It is not a de Polignac number, because 6393137645 - 2⁶ = 6393137581 is a prime.

It is a super-3 number, since 3×6393137645³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 6393137645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505616 + ... + 518105.

It is an arithmetic number, because the mean of its divisors is an integer number (959739375).

Almost surely, 2^6393137645 is an apocalyptic number.

It is an amenable number.

6393137645 is a deficient number, since it is larger than the sum of its proper divisors (1284777355).

6393137645 is a wasteful number, since it uses less digits than its factorization.

6393137645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024975.

The product of its digits is 1224720, while the sum is 47.

The square root of 6393137645 is about 79957.0987780322. The cubic root of 6393137645 is about 1855.9717079957.

The spelling of 6393137645 in words is "six billion, three hundred ninety-three million, one hundred thirty-seven thousand, six hundred forty-five".