19009828867 has 2 divisors, whose sum is σ = 19009828868. Its totient is φ = 19009828866.

The previous prime is 19009828861. The next prime is 19009828919. The reversal of 19009828867 is 76882890091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19009828867 - 2²³ = 19001440259 is a prime.

It is a super-2 number, since 2×19009828867² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19009828861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9504914433 + 9504914434.

It is an arithmetic number, because the mean of its divisors is an integer number (9504914434).

Almost surely, 2^19009828867 is an apocalyptic number.

19009828867 is a deficient number, since it is larger than the sum of its proper divisors (1).

19009828867 is an equidigital number, since it uses as much as digits as its factorization.

19009828867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3483648, while the sum is 58.

The spelling of 19009828867 in words is "nineteen billion, nine million, eight hundred twenty-eight thousand, eight hundred sixty-seven".