18953349 has 4 divisors (see below), whose sum is σ = 25271136. Its totient is φ = 12635564.

The previous prime is 18953329. The next prime is 18953381. The reversal of 18953349 is 94335981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18953349 - 2⁹ = 18952837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18953349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18953309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158889 + ... + 3158894.

It is an arithmetic number, because the mean of its divisors is an integer number (6317784).

Almost surely, 2^18953349 is an apocalyptic number.

It is an amenable number.

18953349 is a deficient number, since it is larger than the sum of its proper divisors (6317787).

18953349 is an equidigital number, since it uses as much as digits as its factorization.

18953349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6317786.

The product of its digits is 116640, while the sum is 42.

The square root of 18953349 is about 4353.5444180575. The cubic root of 18953349 is about 266.6215935973.

The spelling of 18953349 in words is "eighteen million, nine hundred fifty-three thousand, three hundred forty-nine".