913809812297 has 4 divisors (see below), whose sum is σ = 918594157056. Its totient is φ = 909025467540.

The previous prime is 913809812287. The next prime is 913809812299. The reversal of 913809812297 is 792218908319.

913809812297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 792218908319 = 193 ⋅4104761183.

It is a cyclic number.

It is not a de Polignac number, because 913809812297 - 2⁴ = 913809812281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (913809812299) 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, 2392172093 + ... + 2392172474.

It is an arithmetic number, because the mean of its divisors is an integer number (229648539264).

Almost surely, 2^913809812297 is an apocalyptic number.

It is an amenable number.

913809812297 is a deficient number, since it is larger than the sum of its proper divisors (4784344759).

913809812297 is a wasteful number, since it uses less digits than its factorization.

913809812297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4784344758.

The product of its (nonzero) digits is 3919104, while the sum is 59.

Adding to 913809812297 its sum of digits (59), we get a square (913809812356 = 955934²).

The spelling of 913809812297 in words is "nine hundred thirteen billion, eight hundred nine million, eight hundred twelve thousand, two hundred ninety-seven".