493123815 has 32 divisors (see below), whose sum is σ = 922809600. Its totient is φ = 249156000.

The previous prime is 493123793. The next prime is 493123823. The reversal of 493123815 is 518321394.

493123815 = 9929² + 9930² + ... + 9933².

It is not a de Polignac number, because 493123815 - 2⁵ = 493123783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 493123815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93561 + ... + 98690.

It is an arithmetic number, because the mean of its divisors is an integer number (28837800).

Almost surely, 2^493123815 is an apocalyptic number.

493123815 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

493123815 is a deficient number, since it is larger than the sum of its proper divisors (429685785).

493123815 is a wasteful number, since it uses less digits than its factorization.

493123815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192284 (or 192278 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 493123815 is about 22206.3913097108. The cubic root of 493123815 is about 790.0452973012.

The spelling of 493123815 in words is "four hundred ninety-three million, one hundred twenty-three thousand, eight hundred fifteen".