818491514 has 4 divisors (see below), whose sum is σ = 1227737274. Its totient is φ = 409245756.

The previous prime is 818491493. The next prime is 818491517. The reversal of 818491514 is 415194818.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 816073489 + 2418025 = 28567^2 + 1555^2 .

It is not an unprimeable number, because it can be changed into a prime (818491517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204622877 + ... + 204622880.

Almost surely, 2^818491514 is an apocalyptic number.

818491514 is a deficient number, since it is larger than the sum of its proper divisors (409245760).

818491514 is a wasteful number, since it uses less digits than its factorization.

818491514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409245759.

The product of its digits is 46080, while the sum is 41.

The square root of 818491514 is about 28609.2906937589. The cubic root of 818491514 is about 935.4158555075.

The spelling of 818491514 in words is "eight hundred eighteen million, four hundred ninety-one thousand, five hundred fourteen".