198945751459 has 12 divisors (see below), whose sum is σ = 244861546384. Its totient is φ = 157404261024.

The previous prime is 198945751453. The next prime is 198945751481. The reversal of 198945751459 is 954157549891.

It is not a de Polignac number, because 198945751459 - 2⁷ = 198945751331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198945751394 and 198945751403.

It is not an unprimeable number, because it can be changed into a prime (198945751453) 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 in 11 ways as a sum of consecutive naturals, for example, 4231509 + ... + 4278265.

Almost surely, 2^198945751459 is an apocalyptic number.

198945751459 is a deficient number, since it is larger than the sum of its proper divisors (45915794925).

198945751459 is an frugal number, since it uses more digits than its factorization.

198945751459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93534 (or 46777 counting only the distinct ones).

The product of its digits is 81648000, while the sum is 67.

The spelling of 198945751459 in words is "one hundred ninety-eight billion, nine hundred forty-five million, seven hundred fifty-one thousand, four hundred fifty-nine".