818028297 has 6 divisors (see below), whose sum is σ = 1181596442. Its totient is φ = 545352192.

The previous prime is 818028293. The next prime is 818028307. The reversal of 818028297 is 792820818.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 548543241 + 269485056 = 23421^2 + 16416^2 .

It is not a de Polignac number, because 818028297 - 2² = 818028293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (818028293) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45446008 + ... + 45446025.

Almost surely, 2^818028297 is an apocalyptic number.

It is an amenable number.

818028297 is a deficient number, since it is larger than the sum of its proper divisors (363568145).

818028297 is a wasteful number, since it uses less digits than its factorization.

818028297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90892039 (or 90892036 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 818028297 is about 28601.1939785737. The cubic root of 818028297 is about 935.2393591581.

The spelling of 818028297 in words is "eight hundred eighteen million, twenty-eight thousand, two hundred ninety-seven".