19934093253 has 4 divisors (see below), whose sum is σ = 26578791008. Its totient is φ = 13289395500.

The previous prime is 19934093213. The next prime is 19934093273. The reversal of 19934093253 is 35239043991.

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 not a de Polignac number, because 19934093253 - 2²¹ = 19931996101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19934093213) 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, 3322348873 + ... + 3322348878.

It is an arithmetic number, because the mean of its divisors is an integer number (6644697752).

Almost surely, 2^19934093253 is an apocalyptic number.

It is an amenable number.

19934093253 is a deficient number, since it is larger than the sum of its proper divisors (6644697755).

19934093253 is an equidigital number, since it uses as much as digits as its factorization.

19934093253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6644697754.

The product of its (nonzero) digits is 787320, while the sum is 48.

The spelling of 19934093253 in words is "nineteen billion, nine hundred thirty-four million, ninety-three thousand, two hundred fifty-three".