18730953 has 8 divisors (see below), whose sum is σ = 27749600. Its totient is φ = 12487284.

The previous prime is 18730951. The next prime is 18730961. The reversal of 18730953 is 35903781.

It is not a de Polignac number, because 18730953 - 2¹ = 18730951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18730951) 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, 346843 + ... + 346896.

It is an arithmetic number, because the mean of its divisors is an integer number (3468700).

Almost surely, 2^18730953 is an apocalyptic number.

It is an amenable number.

18730953 is a deficient number, since it is larger than the sum of its proper divisors (9018647).

18730953 is an equidigital number, since it uses as much as digits as its factorization.

18730953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693748 (or 693742 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 18730953 is about 4327.9271019739. The cubic root of 18730953 is about 265.5746542275.

It can be divided in two parts, 18730 and 953, that added together give a 9-th power (19683 = 3⁹).

The spelling of 18730953 in words is "eighteen million, seven hundred thirty thousand, nine hundred fifty-three".