198763743 has 16 divisors (see below), whose sum is σ = 273219840. Its totient is φ = 128470464.

The previous prime is 198763729. The next prime is 198763751. The reversal of 198763743 is 347367891.

It is not a de Polignac number, because 198763743 - 2⁹ = 198763231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198763692 and 198763701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198763703) 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, 5230 + ... + 20612.

It is an arithmetic number, because the mean of its divisors is an integer number (17076240).

Almost surely, 2^198763743 is an apocalyptic number.

198763743 is a deficient number, since it is larger than the sum of its proper divisors (74456097).

198763743 is a wasteful number, since it uses less digits than its factorization.

198763743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15518.

The product of its digits is 762048, while the sum is 48.

The square root of 198763743 is about 14098.3595854270. The cubic root of 198763743 is about 583.5961105781.

The spelling of 198763743 in words is "one hundred ninety-eight million, seven hundred sixty-three thousand, seven hundred forty-three".