188009452 has 24 divisors (see below), whose sum is σ = 344477952. Its totient is φ = 89614800.

The previous prime is 188009449. The next prime is 188009453. The reversal of 188009452 is 254900881.

It is not an unprimeable number, because it can be changed into a prime (188009453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25327 + ... + 31897.

It is an arithmetic number, because the mean of its divisors is an integer number (14353248).

Almost surely, 2^188009452 is an apocalyptic number.

It is an amenable number.

188009452 is a deficient number, since it is larger than the sum of its proper divisors (156468500).

188009452 is a wasteful number, since it uses less digits than its factorization.

188009452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6909 (or 6907 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 188009452 is about 13711.6538754448. The cubic root of 188009452 is about 572.8750320119.

The spelling of 188009452 in words is "one hundred eighty-eight million, nine thousand, four hundred fifty-two".