189561244 has 24 divisors (see below), whose sum is σ = 336002688. Its totient is φ = 93566400.

The previous prime is 189561241. The next prime is 189561247. The reversal of 189561244 is 442165981.

189561244 = 21² + 22² + ... + 828².

It is an interprime number because it is at equal distance from previous prime (189561241) and next prime (189561247).

It is a junction number, because it is equal to n+sod(n) for n = 189561197 and 189561206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189561241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244842 + ... + 245614.

It is an arithmetic number, because the mean of its divisors is an integer number (14000112).

Almost surely, 2^189561244 is an apocalyptic number.

It is an amenable number.

189561244 is a deficient number, since it is larger than the sum of its proper divisors (146441444).

189561244 is a wasteful number, since it uses less digits than its factorization.

189561244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485 (or 1483 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 189561244 is about 13768.1242004857. The cubic root of 189561244 is about 574.4468469885.

The spelling of 189561244 in words is "one hundred eighty-nine million, five hundred sixty-one thousand, two hundred forty-four".