813825798 has 16 divisors (see below), whose sum is σ = 1628360496. Its totient is φ = 271157120.

The previous prime is 813825797. The next prime is 813825799. The reversal of 813825798 is 897528318.

It is an interprime number because it is at equal distance from previous prime (813825797) and next prime (813825799).

It is a super-4 number, since 4×813825798⁴ (a number of 37 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 813825798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813825797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13983 + ... + 42698.

It is an arithmetic number, because the mean of its divisors is an integer number (101772531).

Almost surely, 2^813825798 is an apocalyptic number.

813825798 is an abundant number, since it is smaller than the sum of its proper divisors (814534698).

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

813825798 is a wasteful number, since it uses less digits than its factorization.

813825798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59079.

The product of its digits is 967680, while the sum is 51.

The square root of 813825798 is about 28527.6321835514. The cubic root of 813825798 is about 933.6350575797.

The spelling of 813825798 in words is "eight hundred thirteen million, eight hundred twenty-five thousand, seven hundred ninety-eight".