189187002 has 20 divisors (see below), whose sum is σ = 423919386. Its totient is φ = 63062280.

The previous prime is 189186989. The next prime is 189187007. The reversal of 189187002 is 200781981.

It can be written as a sum of positive squares in only one way, i.e., 187388721 + 1798281 = 13689^2 + 1341^2 .

It is not an unprimeable number, because it can be changed into a prime (189187007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 583749 + ... + 584072.

Almost surely, 2^189187002 is an apocalyptic number.

189187002 is an abundant number, since it is smaller than the sum of its proper divisors (234732384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189187002 is a wasteful number, since it uses less digits than its factorization.

189187002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167835 (or 1167826 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 189187002 is about 13754.5266003596. The cubic root of 189187002 is about 574.0685633194.

The spelling of 189187002 in words is "one hundred eighty-nine million, one hundred eighty-seven thousand, two".