1798199030899 has 2 divisors, whose sum is σ = 1798199030900. Its totient is φ = 1798199030898.

The previous prime is 1798199030893. The next prime is 1798199030923. The reversal of 1798199030899 is 9980309918971.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1798199030899 - 2⁹ = 1798199030387 is a prime.

It is a super-2 number, since 2×1798199030899² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1798199030893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899099515449 + 899099515450.

It is an arithmetic number, because the mean of its divisors is an integer number (899099515450).

Almost surely, 2^{1798199030899} is an apocalyptic number.

1798199030899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798199030899 is an equidigital number, since it uses as much as digits as its factorization.

1798199030899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79361856, while the sum is 73.

The spelling of 1798199030899 in words is "one trillion, seven hundred ninety-eight billion, one hundred ninety-nine million, thirty thousand, eight hundred ninety-nine".