189441655 has 8 divisors (see below), whose sum is σ = 244816992. Its totient is φ = 139895328.

The previous prime is 189441653. The next prime is 189441667. The reversal of 189441655 is 556144981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189441655 - 2¹ = 189441653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189441653) 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, 1457179 + ... + 1457308.

It is an arithmetic number, because the mean of its divisors is an integer number (30602124).

Almost surely, 2^189441655 is an apocalyptic number.

189441655 is a deficient number, since it is larger than the sum of its proper divisors (55375337).

189441655 is a wasteful number, since it uses less digits than its factorization.

189441655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914505.

The product of its digits is 172800, while the sum is 43.

The square root of 189441655 is about 13763.7805489626. The cubic root of 189441655 is about 574.3260206458.

It can be divided in two parts, 189441 and 655, that added together give a square (190096 = 436²).

The spelling of 189441655 in words is "one hundred eighty-nine million, four hundred forty-one thousand, six hundred fifty-five".