5210636491 has 4 divisors (see below), whose sum is σ = 5248670472. Its totient is φ = 5172602512.

The previous prime is 5210636489. The next prime is 5210636549. The reversal of 5210636491 is 1946360125.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5210636491 - 2¹ = 5210636489 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 5210636491.

It is not an unprimeable number, because it can be changed into a prime (5210636461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19016785 + ... + 19017058.

It is an arithmetic number, because the mean of its divisors is an integer number (1312167618).

Almost surely, 2^5210636491 is an apocalyptic number.

5210636491 is a deficient number, since it is larger than the sum of its proper divisors (38033981).

5210636491 is a wasteful number, since it uses less digits than its factorization.

5210636491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38033980.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 5210636491 is about 72184.7386294361. The cubic root of 5210636491 is about 1733.6586554771.

The spelling of 5210636491 in words is "five billion, two hundred ten million, six hundred thirty-six thousand, four hundred ninety-one".