19796026253 has 4 divisors (see below), whose sum is σ = 19799092860. Its totient is φ = 19792959648.

The previous prime is 19796026231. The next prime is 19796026273. The reversal of 19796026253 is 35262069791.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6232628809 + 13563397444 = 78947^2 + 116462^2 .

It is a cyclic number.

It is not a de Polignac number, because 19796026253 - 2⁶ = 19796026189 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 (19796026273) 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, 1523600 + ... + 1536537.

It is an arithmetic number, because the mean of its divisors is an integer number (4949773215).

Almost surely, 2^19796026253 is an apocalyptic number.

It is an amenable number.

19796026253 is a deficient number, since it is larger than the sum of its proper divisors (3066607).

19796026253 is an equidigital number, since it uses as much as digits as its factorization.

19796026253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3066606.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 19796026253 in words is "nineteen billion, seven hundred ninety-six million, twenty-six thousand, two hundred fifty-three".