189001813 has 32 divisors (see below), whose sum is σ = 259725312. Its totient is φ = 132753600.

The previous prime is 189001793. The next prime is 189001817. The reversal of 189001813 is 318100981.

189001813 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 189001813 - 2⁹ = 189001301 is a prime.

189001813 is a modest number, since divided by 1813 gives 189 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189001817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40848 + ... + 45238.

It is an arithmetic number, because the mean of its divisors is an integer number (8116416).

Almost surely, 2^189001813 is an apocalyptic number.

189001813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

189001813 is a deficient number, since it is larger than the sum of its proper divisors (70723499).

189001813 is a wasteful number, since it uses less digits than its factorization.

189001813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4465.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 189001813 is about 13747.7930228819. The cubic root of 189001813 is about 573.8811898228.

The spelling of 189001813 in words is "one hundred eighty-nine million, one thousand, eight hundred thirteen".