18041765 has 16 divisors (see below), whose sum is σ = 24862080. Its totient is φ = 12312000.

The previous prime is 18041761. The next prime is 18041767. The reversal of 18041765 is 56714081.

It is a happy number.

It is not a de Polignac number, because 18041765 - 2² = 18041761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18041761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6890 + ... + 9140.

It is an arithmetic number, because the mean of its divisors is an integer number (1553880).

Almost surely, 2^18041765 is an apocalyptic number.

It is an amenable number.

18041765 is a deficient number, since it is larger than the sum of its proper divisors (6820315).

18041765 is a wasteful number, since it uses less digits than its factorization.

18041765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 18041765 is about 4247.5598877473. The cubic root of 18041765 is about 262.2766777871.

The spelling of 18041765 in words is "eighteen million, forty-one thousand, seven hundred sixty-five".