19953001253 has 8 divisors (see below), whose sum is σ = 20008918272. Its totient is φ = 19897113456.

The previous prime is 19953001249. The next prime is 19953001261. The reversal of 19953001253 is 35210035991.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 19953001253 - 2² = 19953001249 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 (19953001223) 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, 2619176 + ... + 2626782.

It is an arithmetic number, because the mean of its divisors is an integer number (2501114784).

Almost surely, 2^19953001253 is an apocalyptic number.

It is an amenable number.

19953001253 is a deficient number, since it is larger than the sum of its proper divisors (55917019).

19953001253 is an equidigital number, since it uses as much as digits as its factorization.

19953001253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14611.

The product of its (nonzero) digits is 36450, while the sum is 38.

The spelling of 19953001253 in words is "nineteen billion, nine hundred fifty-three million, one thousand, two hundred fifty-three".