18077193 has 12 divisors (see below), whose sum is σ = 26174148. Its totient is φ = 12022560.

The previous prime is 18077183. The next prime is 18077207. The reversal of 18077193 is 39177081.

It can be written as a sum of positive squares in 2 ways, for example, as 13927824 + 4149369 = 3732^2 + 2037^2 .

It is not a de Polignac number, because 18077193 - 2⁴ = 18077177 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18077173) 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 in 11 ways as a sum of consecutive naturals, for example, 1971 + ... + 6327.

It is an arithmetic number, because the mean of its divisors is an integer number (2181179).

Almost surely, 2^18077193 is an apocalyptic number.

It is an amenable number.

18077193 is a deficient number, since it is larger than the sum of its proper divisors (8096955).

18077193 is a wasteful number, since it uses less digits than its factorization.

18077193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4824 (or 4821 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 18077193 is about 4251.7282368468. The cubic root of 18077193 is about 262.4482401348.

The spelling of 18077193 in words is "eighteen million, seventy-seven thousand, one hundred ninety-three".