4478881345 has 4 divisors (see below), whose sum is σ = 5374657620. Its totient is φ = 3583105072.

The previous prime is 4478881331. The next prime is 4478881361. The reversal of 4478881345 is 5431888744.

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

It can be written as a sum of positive squares in 2 ways, for example, as 835672464 + 3643208881 = 28908^2 + 60359^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4478881345 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4478881292 and 4478881301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447888130 + ... + 447888139.

It is an arithmetic number, because the mean of its divisors is an integer number (1343664405).

Almost surely, 2^4478881345 is an apocalyptic number.

It is an amenable number.

4478881345 is a deficient number, since it is larger than the sum of its proper divisors (895776275).

4478881345 is an equidigital number, since it uses as much as digits as its factorization.

4478881345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895776274.

The product of its digits is 3440640, while the sum is 52.

The square root of 4478881345 is about 66924.4450481287. The cubic root of 4478881345 is about 1648.3768972987.

The spelling of 4478881345 in words is "four billion, four hundred seventy-eight million, eight hundred eighty-one thousand, three hundred forty-five".