988504513 has 2 divisors, whose sum is σ = 988504514. Its totient is φ = 988504512.

The previous prime is 988504487. The next prime is 988504553. The reversal of 988504513 is 315405889.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600887169 + 387617344 = 24513^2 + 19688^2 .

It is an emirp because it is prime and its reverse (315405889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 988504513 - 2²⁵ = 954950081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 988504513.

It is not a weakly prime, because it can be changed into another prime (988504553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494252256 + 494252257.

It is an arithmetic number, because the mean of its divisors is an integer number (494252257).

Almost surely, 2^988504513 is an apocalyptic number.

It is an amenable number.

988504513 is a deficient number, since it is larger than the sum of its proper divisors (1).

988504513 is an equidigital number, since it uses as much as digits as its factorization.

988504513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 988504513 is about 31440.4916151131. The cubic root of 988504513 is about 996.1533935911.

The spelling of 988504513 in words is "nine hundred eighty-eight million, five hundred four thousand, five hundred thirteen".