816838058 has 4 divisors (see below), whose sum is σ = 1225257090. Its totient is φ = 408419028.

The previous prime is 816838013. The next prime is 816838069. The reversal of 816838058 is 850838618.

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., 797328169 + 19509889 = 28237^2 + 4417^2 .

It is a super-3 number, since 3×816838058³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204209513 + ... + 204209516.

Almost surely, 2^816838058 is an apocalyptic number.

816838058 is a deficient number, since it is larger than the sum of its proper divisors (408419032).

816838058 is a wasteful number, since it uses less digits than its factorization.

816838058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408419031.

The product of its (nonzero) digits is 368640, while the sum is 47.

The square root of 816838058 is about 28580.3788988180. The cubic root of 816838058 is about 934.7855449132.

The spelling of 816838058 in words is "eight hundred sixteen million, eight hundred thirty-eight thousand, fifty-eight".