361998189 has 24 divisors (see below), whose sum is σ = 601557632. Its totient is φ = 205480800.

The previous prime is 361998181. The next prime is 361998223. The reversal of 361998189 is 981899163.

361998189 is a `hidden beast` number, since 3 + 619 + 9 + 8 + 18 + 9 = 666.

It is not a de Polignac number, because 361998189 - 2³ = 361998181 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361998181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9514 + ... + 28539.

Almost surely, 2^361998189 is an apocalyptic number.

It is an amenable number.

361998189 is a deficient number, since it is larger than the sum of its proper divisors (239559443).

361998189 is a wasteful number, since it uses less digits than its factorization.

361998189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38217 (or 38214 counting only the distinct ones).

The product of its digits is 839808, while the sum is 54.

The square root of 361998189 is about 19026.2499983575. The cubic root of 361998189 is about 712.6924082393.

The spelling of 361998189 in words is "three hundred sixty-one million, nine hundred ninety-eight thousand, one hundred eighty-nine".