198650930026 has 4 divisors (see below), whose sum is σ = 297976395042. Its totient is φ = 99325465012.

The previous prime is 198650930021. The next prime is 198650930081. The reversal of 198650930026 is 620039056891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 620039056891 = 8081 ⋅76728011.

It can be written as a sum of positive squares in only one way, i.e., 182627167801 + 16023762225 = 427349^2 + 126585^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (198650930021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49662732505 + ... + 49662732508.

Almost surely, 2^198650930026 is an apocalyptic number.

198650930026 is a deficient number, since it is larger than the sum of its proper divisors (99325465016).

198650930026 is an equidigital number, since it uses as much as digits as its factorization.

198650930026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99325465015.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 198650930026 in words is "one hundred ninety-eight billion, six hundred fifty million, nine hundred thirty thousand, twenty-six".