198742362229439 has 24 divisors (see below), whose sum is σ = 244791592927200. Its totient is φ = 160328610064896.

The previous prime is 198742362229391. The next prime is 198742362229459. The reversal of 198742362229439 is 934922263247891.

It is a de Polignac number, because none of the positive numbers 2^k-198742362229439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198742362229459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103506059 + ... + 105408675.

It is an arithmetic number, because the mean of its divisors is an integer number (10199649705300).

Almost surely, 2^{198742362229439} is an apocalyptic number.

198742362229439 is a deficient number, since it is larger than the sum of its proper divisors (46049230697761).

198742362229439 is a wasteful number, since it uses less digits than its factorization.

198742362229439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028047 (or 2028040 counting only the distinct ones).

The product of its digits is 564350976, while the sum is 71.

The spelling of 198742362229439 in words is "one hundred ninety-eight trillion, seven hundred forty-two billion, three hundred sixty-two million, two hundred twenty-nine thousand, four hundred thirty-nine".