813070188 has 36 divisors (see below), whose sum is σ = 2348870160. Its totient is φ = 232305696.

The previous prime is 813070183. The next prime is 813070213. The reversal of 813070188 is 881070318.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×813070188² = 1322166261228710688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (813070183) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1612983 + ... + 1613486.

Almost surely, 2^813070188 is an apocalyptic number.

It is an amenable number.

813070188 is an abundant number, since it is smaller than the sum of its proper divisors (1535799972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813070188 is a wasteful number, since it uses less digits than its factorization.

813070188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226486 (or 3226481 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 813070188 is about 28514.3856325189. The cubic root of 813070188 is about 933.3460184784.

The spelling of 813070188 in words is "eight hundred thirteen million, seventy thousand, one hundred eighty-eight".