818798749 has 8 divisors (see below), whose sum is σ = 878156640. Its totient is φ = 761067216.

The previous prime is 818798737. The next prime is 818798831. The reversal of 818798749 is 947897818.

It is a happy number.

818798749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 818798749 - 2¹⁷ = 818667677 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 (818795749) 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, 405547 + ... + 407560.

It is an arithmetic number, because the mean of its divisors is an integer number (109769580).

Almost surely, 2^818798749 is an apocalyptic number.

It is an amenable number.

818798749 is a deficient number, since it is larger than the sum of its proper divisors (59357891).

818798749 is a wasteful number, since it uses less digits than its factorization.

818798749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813179.

The product of its digits is 8128512, while the sum is 61.

The square root of 818798749 is about 28614.6596869507. The cubic root of 818798749 is about 935.5328823932.

The spelling of 818798749 in words is "eight hundred eighteen million, seven hundred ninety-eight thousand, seven hundred forty-nine".