817360538 has 4 divisors (see below), whose sum is σ = 1226040810. Its totient is φ = 408680268.

The previous prime is 817360513. The next prime is 817360553. The reversal of 817360538 is 835063718.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 435431689 + 381928849 = 20867^2 + 19543^2 .

It is a junction number, because it is equal to n+sod(n) for n = 817360495 and 817360504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204340133 + ... + 204340136.

Almost surely, 2^817360538 is an apocalyptic number.

817360538 is a deficient number, since it is larger than the sum of its proper divisors (408680272).

817360538 is a wasteful number, since it uses less digits than its factorization.

817360538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408680271.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 817360538 is about 28589.5179742506. The cubic root of 817360538 is about 934.9848102997.

The spelling of 817360538 in words is "eight hundred seventeen million, three hundred sixty thousand, five hundred thirty-eight".