198539542 has 16 divisors (see below), whose sum is σ = 312675840. Its totient is φ = 94367592.

The previous prime is 198539527. The next prime is 198539563. The reversal of 198539542 is 245935891.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 198539492 and 198539501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5742 + ... + 20737.

It is an arithmetic number, because the mean of its divisors is an integer number (19542240).

Almost surely, 2^198539542 is an apocalyptic number.

198539542 is a deficient number, since it is larger than the sum of its proper divisors (114136298).

198539542 is a wasteful number, since it uses less digits than its factorization.

198539542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26667.

The product of its digits is 388800, while the sum is 46.

The square root of 198539542 is about 14090.4060267971. The cubic root of 198539542 is about 583.3766002919.

The spelling of 198539542 in words is "one hundred ninety-eight million, five hundred thirty-nine thousand, five hundred forty-two".