189455147 has 8 divisors (see below), whose sum is σ = 216812256. Its totient is φ = 162171072.

The previous prime is 189455143. The next prime is 189455153. The reversal of 189455147 is 741554981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189455147 - 2² = 189455143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189455098 and 189455107.

It is not an unprimeable number, because it can be changed into a prime (189455143) 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, 12578 + ... + 23175.

It is an arithmetic number, because the mean of its divisors is an integer number (27101532).

Almost surely, 2^189455147 is an apocalyptic number.

189455147 is a deficient number, since it is larger than the sum of its proper divisors (27357109).

189455147 is an equidigital number, since it uses as much as digits as its factorization.

189455147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36517.

The product of its digits is 201600, while the sum is 44.

The square root of 189455147 is about 13764.2706672021. The cubic root of 189455147 is about 574.3396547868.

The spelling of 189455147 in words is "one hundred eighty-nine million, four hundred fifty-five thousand, one hundred forty-seven".