189550913 has 8 divisors (see below), whose sum is σ = 194697216. Its totient is φ = 184429600.

The previous prime is 189550903. The next prime is 189550919. The reversal of 189550913 is 319055981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189550913 - 2⁶ = 189550849 is a prime.

It is a super-3 number, since 3×189550913³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189550919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9668 + ... + 21738.

It is an arithmetic number, because the mean of its divisors is an integer number (24337152).

Almost surely, 2^189550913 is an apocalyptic number.

It is an amenable number.

189550913 is a deficient number, since it is larger than the sum of its proper divisors (5146303).

189550913 is a wasteful number, since it uses less digits than its factorization.

189550913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12495.

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 189550913 is about 13767.7490171778. The cubic root of 189550913 is about 574.4364111033.

The spelling of 189550913 in words is "one hundred eighty-nine million, five hundred fifty thousand, nine hundred thirteen".