189970885 has 16 divisors (see below), whose sum is σ = 245798784. Its totient is φ = 140116032.

The previous prime is 189970871. The next prime is 189970889. The reversal of 189970885 is 588079981.

It is a cyclic number.

It is not a de Polignac number, because 189970885 - 2⁵ = 189970853 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 (189970889) 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, 83574 + ... + 85816.

It is an arithmetic number, because the mean of its divisors is an integer number (15362424).

Almost surely, 2^189970885 is an apocalyptic number.

It is an amenable number.

189970885 is a deficient number, since it is larger than the sum of its proper divisors (55827899).

189970885 is a wasteful number, since it uses less digits than its factorization.

189970885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564.

The product of its (nonzero) digits is 1451520, while the sum is 55.

The square root of 189970885 is about 13782.9925995772. The cubic root of 189970885 is about 574.8603416333.

The spelling of 189970885 in words is "one hundred eighty-nine million, nine hundred seventy thousand, eight hundred eighty-five".