813195770 has 8 divisors (see below), whose sum is σ = 1463752404. Its totient is φ = 325278304.

The previous prime is 813195769. The next prime is 813195781. The reversal of 813195770 is 77591318.

813195770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 806503201 + 6692569 = 28399^2 + 2587^2 .

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

It is a super-2 number, since 2×813195770² = 1322574720691785800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40659779 + ... + 40659798.

Almost surely, 2^813195770 is an apocalyptic number.

813195770 is a deficient number, since it is larger than the sum of its proper divisors (650556634).

813195770 is a wasteful number, since it uses less digits than its factorization.

813195770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81319584.

The product of its (nonzero) digits is 52920, while the sum is 41.

The square root of 813195770 is about 28516.5876289573. The cubic root of 813195770 is about 933.3940690351.

The spelling of 813195770 in words is "eight hundred thirteen million, one hundred ninety-five thousand, seven hundred seventy".