18957103 has 8 divisors (see below), whose sum is σ = 20757456. Its totient is φ = 17169600.

The previous prime is 18957073. The next prime is 18957119. The reversal of 18957103 is 30175981.

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 18957103 - 2⁹ = 18956591 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 (18957203) 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 7 ways as a sum of consecutive naturals, for example, 25 + ... + 6157.

It is an arithmetic number, because the mean of its divisors is an integer number (2594682).

Almost surely, 2^18957103 is an apocalyptic number.

18957103 is a deficient number, since it is larger than the sum of its proper divisors (1800353).

18957103 is a wasteful number, since it uses less digits than its factorization.

18957103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6425.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 18957103 is about 4353.9755396649. The cubic root of 18957103 is about 266.6391952603.

It can be divided in two parts, 1895 and 7103, that added together give a palindrome (8998).

The spelling of 18957103 in words is "eighteen million, nine hundred fifty-seven thousand, one hundred three".