18953125 has 14 divisors (see below), whose sum is σ = 23710634. Its totient is φ = 15150000.

The previous prime is 18953119. The next prime is 18953131. The reversal of 18953125 is 52135981.

It is an interprime number because it is at equal distance from previous prime (18953119) and next prime (18953131).

It can be written as a sum of positive squares in 7 ways, for example, as 17032129 + 1920996 = 4127^2 + 1386^2 .

It is not a de Polignac number, because 18953125 - 2³ = 18953117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 13 ways as a sum of consecutive naturals, for example, 15019 + ... + 16231.

Almost surely, 2^18953125 is an apocalyptic number.

It is an amenable number.

18953125 is a deficient number, since it is larger than the sum of its proper divisors (4757509).

18953125 is an frugal number, since it uses more digits than its factorization.

18953125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1218 counting only the distinct ones).

The product of its digits is 10800, while the sum is 34.

The square root of 18953125 is about 4353.5186918170. The cubic root of 18953125 is about 266.6205432381.

The spelling of 18953125 in words is "eighteen million, nine hundred fifty-three thousand, one hundred twenty-five".