189834913 has 4 divisors (see below), whose sum is σ = 190798740. Its totient is φ = 188871088.

The previous prime is 189834877. The next prime is 189834929. The reversal of 189834913 is 319438981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 319438981 = 11161 ⋅28621.

It can be written as a sum of positive squares in 2 ways, for example, as 182034064 + 7800849 = 13492^2 + 2793^2 .

It is a cyclic number.

It is not a de Polignac number, because 189834913 - 2⁹ = 189834401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189834313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481618 + ... + 482011.

It is an arithmetic number, because the mean of its divisors is an integer number (47699685).

Almost surely, 2^189834913 is an apocalyptic number.

It is an amenable number.

189834913 is a deficient number, since it is larger than the sum of its proper divisors (963827).

189834913 is an equidigital number, since it uses as much as digits as its factorization.

189834913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963826.

The product of its digits is 186624, while the sum is 46.

The square root of 189834913 is about 13778.0591158552. The cubic root of 189834913 is about 574.7231564594.

The spelling of 189834913 in words is "one hundred eighty-nine million, eight hundred thirty-four thousand, nine hundred thirteen".