189661336 has 16 divisors (see below), whose sum is σ = 356031000. Its totient is φ = 94719744.

The previous prime is 189661331. The next prime is 189661337. The reversal of 189661336 is 633166981.

It is a junction number, because it is equal to n+sod(n) for n = 189661292 and 189661301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189661331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6361 + ... + 20488.

Almost surely, 2^189661336 is an apocalyptic number.

It is an amenable number.

189661336 is a deficient number, since it is larger than the sum of its proper divisors (166369664).

189661336 is a wasteful number, since it uses less digits than its factorization.

189661336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27738 (or 27734 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 189661336 is about 13771.7586386053. The cubic root of 189661336 is about 574.5479355438.

It can be divided in two parts, 18966 and 1336, that added together give a palindrome (20302).

The spelling of 189661336 in words is "one hundred eighty-nine million, six hundred sixty-one thousand, three hundred thirty-six".