198831129619 has 2 divisors, whose sum is σ = 198831129620. Its totient is φ = 198831129618.

The previous prime is 198831129593. The next prime is 198831129677. The reversal of 198831129619 is 916921138891.

It is an a-pointer prime, because the next prime (198831129677) can be obtained adding 198831129619 to its sum of digits (58).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198831129619 - 2⁵ = 198831129587 is a prime.

It is a super-2 number, since 2×198831129619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (198831127619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99415564809 + 99415564810.

It is an arithmetic number, because the mean of its divisors is an integer number (99415564810).

Almost surely, 2^198831129619 is an apocalyptic number.

198831129619 is a deficient number, since it is larger than the sum of its proper divisors (1).

198831129619 is an equidigital number, since it uses as much as digits as its factorization.

198831129619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 58.

The spelling of 198831129619 in words is "one hundred ninety-eight billion, eight hundred thirty-one million, one hundred twenty-nine thousand, six hundred nineteen".