637542113 has 8 divisors (see below), whose sum is σ = 687391488. Its totient is φ = 587808144.

The previous prime is 637542097. The next prime is 637542127. The reversal of 637542113 is 311245736.

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

It is a cyclic number.

It is not a de Polignac number, because 637542113 - 2⁴ = 637542097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 637542113.

It is not an unprimeable number, because it can be changed into a prime (637542163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17195 + ... + 39632.

It is an arithmetic number, because the mean of its divisors is an integer number (85923936).

Almost surely, 2^637542113 is an apocalyptic number.

It is an amenable number.

637542113 is a deficient number, since it is larger than the sum of its proper divisors (49849375).

637542113 is a wasteful number, since it uses less digits than its factorization.

637542113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57703.

The product of its digits is 15120, while the sum is 32.

The square root of 637542113 is about 25249.5962938024. The cubic root of 637542113 is about 860.6692613532.

Adding to 637542113 its reverse (311245736), we get a palindrome (948787849).

The spelling of 637542113 in words is "six hundred thirty-seven million, five hundred forty-two thousand, one hundred thirteen".