19388040227 has 2 divisors, whose sum is σ = 19388040228. Its totient is φ = 19388040226.

The previous prime is 19388040169. The next prime is 19388040247. The reversal of 19388040227 is 72204088391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19388040227 - 2¹⁴ = 19388023843 is a prime.

It is a super-2 number, since 2×19388040227² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19388040247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9694020113 + 9694020114.

It is an arithmetic number, because the mean of its divisors is an integer number (9694020114).

Almost surely, 2^19388040227 is an apocalyptic number.

19388040227 is a deficient number, since it is larger than the sum of its proper divisors (1).

19388040227 is an equidigital number, since it uses as much as digits as its factorization.

19388040227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 19388040227 in words is "nineteen billion, three hundred eighty-eight million, forty thousand, two hundred twenty-seven".