189710649 has 24 divisors (see below), whose sum is σ = 295495200. Its totient is φ = 116890560.

The previous prime is 189710639. The next prime is 189710657. The reversal of 189710649 is 946017981.

It is a happy number.

189710649 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 189710649 - 2⁵ = 189710617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189710629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6519 + ... + 20540.

It is an arithmetic number, because the mean of its divisors is an integer number (12312300).

Almost surely, 2^189710649 is an apocalyptic number.

189710649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

189710649 is a deficient number, since it is larger than the sum of its proper divisors (105784551).

189710649 is a wasteful number, since it uses less digits than its factorization.

189710649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27125 (or 27122 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 189710649 is about 13773.5488890845. The cubic root of 189710649 is about 574.5977264461.

The spelling of 189710649 in words is "one hundred eighty-nine million, seven hundred ten thousand, six hundred forty-nine".