19493027293 has 2 divisors, whose sum is σ = 19493027294. Its totient is φ = 19493027292.

The previous prime is 19493027273. The next prime is 19493027341. The reversal of 19493027293 is 39272039491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11948020249 + 7545007044 = 109307^2 + 86862^2 .

It is a cyclic number.

It is not a de Polignac number, because 19493027293 - 2⁹ = 19493026781 is a prime.

It is a super-2 number, since 2×19493027293² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19493027243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9746513646 + 9746513647.

It is an arithmetic number, because the mean of its divisors is an integer number (9746513647).

Almost surely, 2^19493027293 is an apocalyptic number.

It is an amenable number.

19493027293 is a deficient number, since it is larger than the sum of its proper divisors (1).

19493027293 is an equidigital number, since it uses as much as digits as its factorization.

19493027293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 49.

The spelling of 19493027293 in words is "nineteen billion, four hundred ninety-three million, twenty-seven thousand, two hundred ninety-three".