7538668357 has 4 divisors (see below), whose sum is σ = 8224001856. Its totient is φ = 6853334860.

The previous prime is 7538668351. The next prime is 7538668387.

7538668357 is nontrivially palindromic in base 10.

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 not a de Polignac number, because 7538668357 - 2⁷ = 7538668229 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 (7538668351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342666733 + ... + 342666754.

It is an arithmetic number, because the mean of its divisors is an integer number (2056000464).

Almost surely, 2^7538668357 is an apocalyptic number.

It is an amenable number.

7538668357 is a deficient number, since it is larger than the sum of its proper divisors (685333499).

7538668357 is a wasteful number, since it uses less digits than its factorization.

7538668357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685333498.

The product of its digits is 25401600, while the sum is 58.

The square root of 7538668357 is about 86825.5052216801. The cubic root of 7538668357 is about 1960.7920890047.

The spelling of 7538668357 in words is "seven billion, five hundred thirty-eight million, six hundred sixty-eight thousand, three hundred fifty-seven".