6475137349 has 4 divisors (see below), whose sum is σ = 6553151136. Its totient is φ = 6397123564.

The previous prime is 6475137343. The next prime is 6475137377. The reversal of 6475137349 is 9437315746.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6475137349 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 (6475137343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39006769 + ... + 39006934.

It is an arithmetic number, because the mean of its divisors is an integer number (1638287784).

Almost surely, 2^6475137349 is an apocalyptic number.

It is an amenable number.

6475137349 is a deficient number, since it is larger than the sum of its proper divisors (78013787).

6475137349 is an equidigital number, since it uses as much as digits as its factorization.

6475137349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78013786.

The product of its digits is 1905120, while the sum is 49.

The square root of 6475137349 is about 80468.2381377895. The cubic root of 6475137349 is about 1863.8730477626.

The spelling of 6475137349 in words is "six billion, four hundred seventy-five million, one hundred thirty-seven thousand, three hundred forty-nine".