1478633444 has 12 divisors (see below), whose sum is σ = 2588165244. Its totient is φ = 739157664.

The previous prime is 1478633437. The next prime is 1478633449. The reversal of 1478633444 is 4443368741.

It can be written as a sum of positive squares in 2 ways, for example, as 1156000000 + 322633444 = 34000^2 + 17962^2 .

It is a super-2 number, since 2×1478633444² = 4372713723430602272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1478633395 and 1478633404.

It is not an unprimeable number, because it can be changed into a prime (1478633449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17459 + ... + 57114.

It is an arithmetic number, because the mean of its divisors is an integer number (215680437).

Almost surely, 2^1478633444 is an apocalyptic number.

It is an amenable number.

1478633444 is a deficient number, since it is larger than the sum of its proper divisors (1109531800).

1478633444 is a wasteful number, since it uses less digits than its factorization.

1478633444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79534 (or 79532 counting only the distinct ones).

The product of its digits is 774144, while the sum is 44.

The square root of 1478633444 is about 38453.0030556782. The cubic root of 1478633444 is about 1139.2529844944.

The spelling of 1478633444 in words is "one billion, four hundred seventy-eight million, six hundred thirty-three thousand, four hundred forty-four".