18145757 has 8 divisors (see below), whose sum is σ = 21407232. Its totient is φ = 15051600.

The previous prime is 18145711. The next prime is 18145759. The reversal of 18145757 is 75754181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18145757 - 2¹⁰ = 18144733 is a prime.

It is a super-3 number, since 3×18145757³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18145757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18145759) 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 7 ways as a sum of consecutive naturals, for example, 41594 + ... + 42027.

It is an arithmetic number, because the mean of its divisors is an integer number (2675904).

Almost surely, 2^18145757 is an apocalyptic number.

It is an amenable number.

18145757 is a deficient number, since it is larger than the sum of its proper divisors (3261475).

18145757 is an equidigital number, since it uses as much as digits as its factorization.

18145757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83659.

The product of its digits is 39200, while the sum is 38.

The square root of 18145757 is about 4259.7836799537. The cubic root of 18145757 is about 262.7796300586.

The spelling of 18145757 in words is "eighteen million, one hundred forty-five thousand, seven hundred fifty-seven".