198144023 has 16 divisors (see below), whose sum is σ = 247366656. Its totient is φ = 154191840.

The previous prime is 198144017. The next prime is 198144041. The reversal of 198144023 is 320441891.

It is a happy number.

It is not a de Polignac number, because 198144023 - 2⁸ = 198143767 is a prime.

It is a super-3 number, since 3×198144023³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198144013) 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, 83765 + ... + 86097.

It is an arithmetic number, because the mean of its divisors is an integer number (15460416).

Almost surely, 2^198144023 is an apocalyptic number.

198144023 is a deficient number, since it is larger than the sum of its proper divisors (49222633).

198144023 is a wasteful number, since it uses less digits than its factorization.

198144023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 198144023 is about 14076.3639836429. The cubic root of 198144023 is about 582.9889530470.

The spelling of 198144023 in words is "one hundred ninety-eight million, one hundred forty-four thousand, twenty-three".