189731954 has 4 divisors (see below), whose sum is σ = 284597934. Its totient is φ = 94865976.

The previous prime is 189731923. The next prime is 189731963. The reversal of 189731954 is 459137981.

189731954 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 188101225 + 1630729 = 13715^2 + 1277^2 .

It is a junction number, because it is equal to n+sod(n) for n = 189731899 and 189731908.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47432987 + ... + 47432990.

Almost surely, 2^189731954 is an apocalyptic number.

189731954 is a deficient number, since it is larger than the sum of its proper divisors (94865980).

189731954 is an equidigital number, since it uses as much as digits as its factorization.

189731954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94865979.

The product of its digits is 272160, while the sum is 47.

The square root of 189731954 is about 13774.3222700792. The cubic root of 189731954 is about 574.6192352480.

The spelling of 189731954 in words is "one hundred eighty-nine million, seven hundred thirty-one thousand, nine hundred fifty-four".