813483136489 has 9 divisors (see below), whose sum is σ = 827558813437. Its totient is φ = 799642974604.

The previous prime is 813483136441. The next prime is 813483136493. The reversal of 813483136489 is 984631384318.

The square root of 813483136489 is 901933.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 813483136489 - 2²⁷ = 813348918761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813483136189) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 53206404 + ... + 53221690.

Almost surely, 2^813483136489 is an apocalyptic number.

813483136489 is the 901933-rd square number.

813483136489 is the 450967-th centered octagonal number.

It is an amenable number.

813483136489 is a deficient number, since it is larger than the sum of its proper divisors (14075676948).

813483136489 is an frugal number, since it uses more digits than its factorization.

813483136489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30692 (or 15346 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 58.

The spelling of 813483136489 in words is "eight hundred thirteen billion, four hundred eighty-three million, one hundred thirty-six thousand, four hundred eighty-nine".