19420953 has 8 divisors (see below), whose sum is σ = 27417888. Its totient is φ = 12185664.

The previous prime is 19420943. The next prime is 19420979. The reversal of 19420953 is 35902491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19420953 - 2⁶ = 19420889 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (19420903) 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, 190351 + ... + 190452.

It is an arithmetic number, because the mean of its divisors is an integer number (3427236).

Almost surely, 2^19420953 is an apocalyptic number.

It is an amenable number.

19420953 is a deficient number, since it is larger than the sum of its proper divisors (7996935).

19420953 is a wasteful number, since it uses less digits than its factorization.

19420953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380823.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 19420953 is about 4406.9210340100. The cubic root of 19420953 is about 268.7964399286.

It can be divided in two parts, 1942095 and 3, that multiplied together give a palindrome (5826285).

The spelling of 19420953 in words is "nineteen million, four hundred twenty thousand, nine hundred fifty-three".