147728918 has 4 divisors (see below), whose sum is σ = 221593380. Its totient is φ = 73864458.

The previous prime is 147728909. The next prime is 147728939. The reversal of 147728918 is 819827741.

It is a happy number.

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

It is a Curzon number.

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, 36932228 + ... + 36932231.

It is an arithmetic number, because the mean of its divisors is an integer number (55398345).

Almost surely, 2^147728918 is an apocalyptic number.

147728918 is a deficient number, since it is larger than the sum of its proper divisors (73864462).

147728918 is an equidigital number, since it uses as much as digits as its factorization.

147728918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73864461.

The product of its digits is 225792, while the sum is 47.

The square root of 147728918 is about 12154.3785526040. The cubic root of 147728918 is about 528.6340976653.

The spelling of 147728918 in words is "one hundred forty-seven million, seven hundred twenty-eight thousand, nine hundred eighteen".