198011976745469 has 2 divisors, whose sum is σ = 198011976745470. Its totient is φ = 198011976745468.

The previous prime is 198011976745423. The next prime is 198011976745477. The reversal of 198011976745469 is 964547679110891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162690790300900 + 35321186444569 = 12755030^2 + 5943163^2 .

It is a cyclic number.

It is not a de Polignac number, because 198011976745469 - 2⁸ = 198011976745213 is a prime.

It is a super-2 number, since 2×198011976745469² (a number of 29 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 198011976745469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198011976745669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99005988372734 + 99005988372735.

It is an arithmetic number, because the mean of its divisors is an integer number (99005988372735).

Almost surely, 2^{198011976745469} is an apocalyptic number.

It is an amenable number.

198011976745469 is a deficient number, since it is larger than the sum of its proper divisors (1).

198011976745469 is an equidigital number, since it uses as much as digits as its factorization.

198011976745469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 823011840, while the sum is 77.

The spelling of 198011976745469 in words is "one hundred ninety-eight trillion, eleven billion, nine hundred seventy-six million, seven hundred forty-five thousand, four hundred sixty-nine".