813526138 has 8 divisors (see below), whose sum is σ = 1227596832. Its totient is φ = 404327196.

The previous prime is 813526111. The next prime is 813526151. The reversal of 813526138 is 831625318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 813526097 and 813526106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217520 + ... + 1218187.

It is an arithmetic number, because the mean of its divisors is an integer number (153449604).

Almost surely, 2^813526138 is an apocalyptic number.

813526138 is a deficient number, since it is larger than the sum of its proper divisors (414070694).

813526138 is a wasteful number, since it uses less digits than its factorization.

813526138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435876.

The product of its digits is 34560, while the sum is 37.

The square root of 813526138 is about 28522.3795991849. The cubic root of 813526138 is about 933.5204517973.

The spelling of 813526138 in words is "eight hundred thirteen million, five hundred twenty-six thousand, one hundred thirty-eight".