19941253 has 4 divisors (see below), whose sum is σ = 20808288. Its totient is φ = 19074220.

The previous prime is 19941247. The next prime is 19941281. The reversal of 19941253 is 35214991.

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 a de Polignac number, because none of the positive numbers 2^k-19941253 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 (19941283) 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, 433483 + ... + 433528.

It is an arithmetic number, because the mean of its divisors is an integer number (5202072).

Almost surely, 2^19941253 is an apocalyptic number.

It is an amenable number.

19941253 is a deficient number, since it is larger than the sum of its proper divisors (867035).

19941253 is an equidigital number, since it uses as much as digits as its factorization.

19941253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867034.

The product of its digits is 9720, while the sum is 34.

The square root of 19941253 is about 4465.5630104165. The cubic root of 19941253 is about 271.1757278582.

The spelling of 19941253 in words is "nineteen million, nine hundred forty-one thousand, two hundred fifty-three".