1205017622819 has 2 divisors, whose sum is σ = 1205017622820. Its totient is φ = 1205017622818.

The previous prime is 1205017622797. The next prime is 1205017622873. The reversal of 1205017622819 is 9182267105021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1205017622819 - 2¹² = 1205017618723 is a prime.

It is a super-2 number, since 2×1205017622819² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1205017622819.

It is not a weakly prime, because it can be changed into another prime (1205017622899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602508811409 + 602508811410.

It is an arithmetic number, because the mean of its divisors is an integer number (602508811410).

Almost surely, 2^{1205017622819} is an apocalyptic number.

1205017622819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205017622819 is an equidigital number, since it uses as much as digits as its factorization.

1205017622819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 1205017622819 in words is "one trillion, two hundred five billion, seventeen million, six hundred twenty-two thousand, eight hundred nineteen".