198493176379137 has 16 divisors (see below), whose sum is σ = 271122065003328. Its totient is φ = 129096760619520.

The previous prime is 198493176379133. The next prime is 198493176379193. The reversal of 198493176379137 is 731973671394891.

It is a happy number.

It is not a de Polignac number, because 198493176379137 - 2² = 198493176379133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198493176379133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24525943 + ... + 31599180.

It is an arithmetic number, because the mean of its divisors is an integer number (16945129062708).

Almost surely, 2^{198493176379137} is an apocalyptic number.

It is an amenable number.

198493176379137 is a deficient number, since it is larger than the sum of its proper divisors (72628888624191).

198493176379137 is a wasteful number, since it uses less digits than its factorization.

198493176379137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56153920.

The product of its digits is 1296243648, while the sum is 78.

The spelling of 198493176379137 in words is "one hundred ninety-eight trillion, four hundred ninety-three billion, one hundred seventy-six million, three hundred seventy-nine thousand, one hundred thirty-seven".