813532097 has 4 divisors (see below), whose sum is σ = 929750976. Its totient is φ = 697313220.

The previous prime is 813532079. The next prime is 813532117. The reversal of 813532097 is 790235318.

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: 790235318 = 2 ⋅395117659.

It is a cyclic number.

It is not a de Polignac number, because 813532097 - 2⁸ = 813531841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 813532097.

It is not an unprimeable number, because it can be changed into a prime (813532037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58109429 + ... + 58109442.

It is an arithmetic number, because the mean of its divisors is an integer number (232437744).

Almost surely, 2^813532097 is an apocalyptic number.

It is an amenable number.

813532097 is a deficient number, since it is larger than the sum of its proper divisors (116218879).

813532097 is a wasteful number, since it uses less digits than its factorization.

813532097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116218878.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 813532097 is about 28522.4840608247. The cubic root of 813532097 is about 933.5227311073.

The spelling of 813532097 in words is "eight hundred thirteen million, five hundred thirty-two thousand, ninety-seven".