4161728386 has 4 divisors (see below), whose sum is σ = 6242592582. Its totient is φ = 2080864192.

The previous prime is 4161728339. The next prime is 4161728413. The reversal of 4161728386 is 6838271614.

It is a happy number.

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., 3753890361 + 407838025 = 61269^2 + 20195^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040432095 + ... + 1040432098.

Almost surely, 2^4161728386 is an apocalyptic number.

4161728386 is a deficient number, since it is larger than the sum of its proper divisors (2080864196).

4161728386 is a wasteful number, since it uses less digits than its factorization.

4161728386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080864195.

The product of its digits is 387072, while the sum is 46.

The square root of 4161728386 is about 64511.4593386322. The cubic root of 4161728386 is about 1608.5130086888.

The spelling of 4161728386 in words is "four billion, one hundred sixty-one million, seven hundred twenty-eight thousand, three hundred eighty-six".