18076693 has 2 divisors, whose sum is σ = 18076694. Its totient is φ = 18076692.

The previous prime is 18076633. The next prime is 18076697. The reversal of 18076693 is 39667081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17918289 + 158404 = 4233^2 + 398^2 .

It is a cyclic number.

It is not a de Polignac number, because 18076693 - 2⁹ = 18076181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18076697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9038346 + 9038347.

It is an arithmetic number, because the mean of its divisors is an integer number (9038347).

Almost surely, 2^18076693 is an apocalyptic number.

It is an amenable number.

18076693 is a deficient number, since it is larger than the sum of its proper divisors (1).

18076693 is an equidigital number, since it uses as much as digits as its factorization.

18076693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 18076693 is about 4251.6694368213. The cubic root of 18076693 is about 262.4458204130.

It can be divided in two parts, 18076 and 693, that added together give a square (18769 = 137²).

The spelling of 18076693 in words is "eighteen million, seventy-six thousand, six hundred ninety-three".