813550190 has 8 divisors (see below), whose sum is σ = 1464390360. Its totient is φ = 325420072.

The previous prime is 813550183. The next prime is 813550237. The reversal of 813550190 is 91055318.

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

It is a super-2 number, since 2×813550190² = 1323727823298072200, which contains 22 as substring.

It is a congruent number.

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, 40677500 + ... + 40677519.

It is an arithmetic number, because the mean of its divisors is an integer number (183048795).

Almost surely, 2^813550190 is an apocalyptic number.

813550190 is a deficient number, since it is larger than the sum of its proper divisors (650840170).

813550190 is a wasteful number, since it uses less digits than its factorization.

813550190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81355026.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 813550190 is about 28522.8012298933. The cubic root of 813550190 is about 933.5296515888.

The spelling of 813550190 in words is "eight hundred thirteen million, five hundred fifty thousand, one hundred ninety".