189141555 has 16 divisors (see below), whose sum is σ = 302804640. Its totient is φ = 100816128.

The previous prime is 189141553. The next prime is 189141593. The reversal of 189141555 is 555141981.

It is a happy number.

It is not a de Polignac number, because 189141555 - 2¹ = 189141553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189141553) 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, 37101 + ... + 41889.

It is an arithmetic number, because the mean of its divisors is an integer number (18925290).

Almost surely, 2^189141555 is an apocalyptic number.

189141555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189141555 is a deficient number, since it is larger than the sum of its proper divisors (113663085).

189141555 is a wasteful number, since it uses less digits than its factorization.

189141555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7430.

The product of its digits is 36000, while the sum is 39.

The square root of 189141555 is about 13752.8744268244. The cubic root of 189141555 is about 574.0225915505.

The spelling of 189141555 in words is "one hundred eighty-nine million, one hundred forty-one thousand, five hundred fifty-five".