189389326 has 16 divisors (see below), whose sum is σ = 324931680. Its totient is φ = 81100800.

The previous prime is 189389311. The next prime is 189389341. The reversal of 189389326 is 623983981.

189389326 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (189389311) and next prime (189389341).

It is a self number, because there is not a number n which added to its sum of digits gives 189389326.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14926 + ... + 24526.

It is an arithmetic number, because the mean of its divisors is an integer number (20308230).

Almost surely, 2^189389326 is an apocalyptic number.

189389326 is a deficient number, since it is larger than the sum of its proper divisors (135542354).

189389326 is a wasteful number, since it uses less digits than its factorization.

189389326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11019.

The product of its digits is 559872, while the sum is 49.

The square root of 189389326 is about 13761.8794501333. The cubic root of 189389326 is about 574.2731342237.

It can be divided in two parts, 1893 and 89326, that added together give a palindrome (91219).

The spelling of 189389326 in words is "one hundred eighty-nine million, three hundred eighty-nine thousand, three hundred twenty-six".