189154718 has 4 divisors (see below), whose sum is σ = 283732080. Its totient is φ = 94577358.

The previous prime is 189154703. The next prime is 189154739. The reversal of 189154718 is 817451981.

It is a happy number.

189154718 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 is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47288678 + ... + 47288681.

It is an arithmetic number, because the mean of its divisors is an integer number (70933020).

Almost surely, 2^189154718 is an apocalyptic number.

189154718 is a deficient number, since it is larger than the sum of its proper divisors (94577362).

189154718 is an equidigital number, since it uses as much as digits as its factorization.

189154718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94577361.

The product of its digits is 80640, while the sum is 44.

The square root of 189154718 is about 13753.3529730026. The cubic root of 189154718 is about 574.0359072990.

The spelling of 189154718 in words is "one hundred eighty-nine million, one hundred fifty-four thousand, seven hundred eighteen".