813625244 has 6 divisors (see below), whose sum is σ = 1423844184. Its totient is φ = 406812620.

The previous prime is 813625243. The next prime is 813625261. The reversal of 813625244 is 442526318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813625243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101703152 + ... + 101703159.

It is an arithmetic number, because the mean of its divisors is an integer number (237307364).

Almost surely, 2^813625244 is an apocalyptic number.

It is an amenable number.

813625244 is a deficient number, since it is larger than the sum of its proper divisors (610218940).

813625244 is a wasteful number, since it uses less digits than its factorization.

813625244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203406315 (or 203406313 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 813625244 is about 28524.1168837880. The cubic root of 813625244 is about 933.5583582709.

The spelling of 813625244 in words is "eight hundred thirteen million, six hundred twenty-five thousand, two hundred forty-four".