189880005 has 32 divisors (see below), whose sum is σ = 347904000. Its totient is φ = 86628672.

The previous prime is 189880001. The next prime is 189880043. The reversal of 189880005 is 500088981.

189880005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189880005 - 2² = 189880001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189880001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61386 + ... + 64404.

It is an arithmetic number, because the mean of its divisors is an integer number (10872000).

Almost surely, 2^189880005 is an apocalyptic number.

189880005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189880005 is a deficient number, since it is larger than the sum of its proper divisors (158023995).

189880005 is a wasteful number, since it uses less digits than its factorization.

189880005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633.

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 189880005 is about 13779.6953885055. The cubic root of 189880005 is about 574.7686580385.

The spelling of 189880005 in words is "one hundred eighty-nine million, eight hundred eighty thousand, five".