198453423 has 32 divisors (see below), whose sum is σ = 319449600. Its totient is φ = 107053056.

The previous prime is 198453421. The next prime is 198453439. The reversal of 198453423 is 324354891.

It is not a de Polignac number, because 198453423 - 2¹ = 198453421 is a prime.

It is a super-2 number, since 2×198453423² = 78767522200833858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198453421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140143 + ... + 141551.

It is an arithmetic number, because the mean of its divisors is an integer number (9982800).

Almost surely, 2^198453423 is an apocalyptic number.

198453423 is a deficient number, since it is larger than the sum of its proper divisors (120996177).

198453423 is a wasteful number, since it uses less digits than its factorization.

198453423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791.

The product of its digits is 103680, while the sum is 39.

The square root of 198453423 is about 14087.3497507516. The cubic root of 198453423 is about 583.2922391368.

The spelling of 198453423 in words is "one hundred ninety-eight million, four hundred fifty-three thousand, four hundred twenty-three".