813860245 has 8 divisors (see below), whose sum is σ = 1065417120. Its totient is φ = 591898320.

The previous prime is 813860213. The next prime is 813860273. The reversal of 813860245 is 542068318.

It is a happy number.

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

It is not a de Polignac number, because 813860245 - 2⁵ = 813860213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7398675 + ... + 7398784.

It is an arithmetic number, because the mean of its divisors is an integer number (133177140).

Almost surely, 2^813860245 is an apocalyptic number.

It is an amenable number.

813860245 is a deficient number, since it is larger than the sum of its proper divisors (251556875).

813860245 is a wasteful number, since it uses less digits than its factorization.

813860245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14797475.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 813860245 is about 28528.2359251321. The cubic root of 813860245 is about 933.6482301256.

The spelling of 813860245 in words is "eight hundred thirteen million, eight hundred sixty thousand, two hundred forty-five".