493968637 has 4 divisors (see below), whose sum is σ = 504478656. Its totient is φ = 483458620.

The previous prime is 493968617. The next prime is 493968641. The reversal of 493968637 is 736869394.

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, and also an emirpimes, since its reverse is a distinct semiprime: 736869394 = 2 ⋅368434697.

It is a cyclic number.

It is not a de Polignac number, because 493968637 - 2¹¹ = 493966589 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 (493968617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5254939 + ... + 5255032.

It is an arithmetic number, because the mean of its divisors is an integer number (126119664).

Almost surely, 2^493968637 is an apocalyptic number.

493968637 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

493968637 is a deficient number, since it is larger than the sum of its proper divisors (10510019).

493968637 is a wasteful number, since it uses less digits than its factorization.

493968637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10510018.

The product of its digits is 5878656, while the sum is 55.

The square root of 493968637 is about 22225.4052156535. The cubic root of 493968637 is about 790.4962096496.

The spelling of 493968637 in words is "four hundred ninety-three million, nine hundred sixty-eight thousand, six hundred thirty-seven".