18768693 has 16 divisors (see below), whose sum is σ = 25768512. Its totient is φ = 12144000.

The previous prime is 18768679. The next prime is 18768703. The reversal of 18768693 is 39686781.

It is not a de Polignac number, because 18768693 - 2¹³ = 18760501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18768623) 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 in 15 ways as a sum of consecutive naturals, for example, 40483 + ... + 40943.

It is an arithmetic number, because the mean of its divisors is an integer number (1610532).

Almost surely, 2^18768693 is an apocalyptic number.

It is an amenable number.

18768693 is a deficient number, since it is larger than the sum of its proper divisors (6999819).

18768693 is a wasteful number, since it uses less digits than its factorization.

18768693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836.

The product of its digits is 435456, while the sum is 48.

The square root of 18768693 is about 4332.2849629266. The cubic root of 18768693 is about 265.7528986467.

The spelling of 18768693 in words is "eighteen million, seven hundred sixty-eight thousand, six hundred ninety-three".