788234813 has 6 divisors (see below), whose sum is σ = 790155774. Its totient is φ = 786318456.

The previous prime is 788234809. The next prime is 788234827. The reversal of 788234813 is 318432887.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 746218489 + 42016324 = 27317^2 + 6482^2 .

It is not a de Polignac number, because 788234813 - 2² = 788234809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (788233813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212531 + ... + 216207.

It is an arithmetic number, because the mean of its divisors is an integer number (131692629).

Almost surely, 2^788234813 is an apocalyptic number.

It is an amenable number.

788234813 is a deficient number, since it is larger than the sum of its proper divisors (1920961).

788234813 is an frugal number, since it uses more digits than its factorization.

788234813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4603 (or 4140 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 788234813 is about 28075.5198170933. The cubic root of 788234813 is about 923.7445106894.

The spelling of 788234813 in words is "seven hundred eighty-eight million, two hundred thirty-four thousand, eight hundred thirteen".