6638234349 has 8 divisors (see below), whose sum is σ = 9056816032. Its totient is φ = 4322571120.

The previous prime is 6638234333. The next prime is 6638234359. The reversal of 6638234349 is 9434328366.

It is a happy number.

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

It is not a de Polignac number, because 6638234349 - 2⁴ = 6638234333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6638234298 and 6638234307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6638234329) 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, 25729462 + ... + 25729719.

It is an arithmetic number, because the mean of its divisors is an integer number (1132102004).

Almost surely, 2^6638234349 is an apocalyptic number.

It is an amenable number.

6638234349 is a deficient number, since it is larger than the sum of its proper divisors (2418581683).

6638234349 is a wasteful number, since it uses less digits than its factorization.

6638234349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51459227.

The product of its digits is 2239488, while the sum is 48.

The square root of 6638234349 is about 81475.3603796878. The cubic root of 6638234349 is about 1879.3926615412.

The spelling of 6638234349 in words is "six billion, six hundred thirty-eight million, two hundred thirty-four thousand, three hundred forty-nine".