1478385849 has 4 divisors (see below), whose sum is σ = 1971181136. Its totient is φ = 985590564.

The previous prime is 1478385793. The next prime is 1478385863. The reversal of 1478385849 is 9485838741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1478385849 - 2⁷ = 1478385721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1478385149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246397639 + ... + 246397644.

It is an arithmetic number, because the mean of its divisors is an integer number (492795284).

Almost surely, 2^1478385849 is an apocalyptic number.

It is an amenable number.

1478385849 is a deficient number, since it is larger than the sum of its proper divisors (492795287).

1478385849 is an equidigital number, since it uses as much as digits as its factorization.

1478385849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492795286.

The product of its digits is 7741440, while the sum is 57.

The square root of 1478385849 is about 38449.7834714319. The cubic root of 1478385849 is about 1139.1893921981.

The spelling of 1478385849 in words is "one billion, four hundred seventy-eight million, three hundred eighty-five thousand, eight hundred forty-nine".