189051291 has 24 divisors (see below), whose sum is σ = 320816496. Its totient is φ = 105762240.

The previous prime is 189051223. The next prime is 189051301. The reversal of 189051291 is 192150981.

189051291 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 189051291 - 2¹⁷ = 188920219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189051211) 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, 72160 + ... + 74733.

It is an arithmetic number, because the mean of its divisors is an integer number (13367354).

Almost surely, 2^189051291 is an apocalyptic number.

189051291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

189051291 is a deficient number, since it is larger than the sum of its proper divisors (131765205).

189051291 is a wasteful number, since it uses less digits than its factorization.

189051291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146923 (or 146920 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 189051291 is about 13749.5923939584. The cubic root of 189051291 is about 573.9312634450.

The spelling of 189051291 in words is "one hundred eighty-nine million, fifty-one thousand, two hundred ninety-one".