18268957 has 8 divisors (see below), whose sum is σ = 21190976. Its totient is φ = 15424992.

The previous prime is 18268891. The next prime is 18268963. The reversal of 18268957 is 75986281.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18268957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18268967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19008 + ... + 19945.

It is an arithmetic number, because the mean of its divisors is an integer number (2648872).

Almost surely, 2^18268957 is an apocalyptic number.

It is an amenable number.

18268957 is a deficient number, since it is larger than the sum of its proper divisors (2922019).

18268957 is an equidigital number, since it uses as much as digits as its factorization.

18268957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39027.

The product of its digits is 241920, while the sum is 46.

The square root of 18268957 is about 4274.2200458095. The cubic root of 18268957 is about 263.3730003091.

The spelling of 18268957 in words is "eighteen million, two hundred sixty-eight thousand, nine hundred fifty-seven".