1478978450 has 12 divisors (see below), whose sum is σ = 2750900010. Its totient is φ = 591591360.

The previous prime is 1478978447. The next prime is 1478978471. The reversal of 1478978450 is 548798741.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 581436769 + 897541681 = 24113^2 + 29959^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1478978392 and 1478978401.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14789735 + ... + 14789834.

Almost surely, 2^1478978450 is an apocalyptic number.

1478978450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1478978450 is a deficient number, since it is larger than the sum of its proper divisors (1271921560).

1478978450 is a wasteful number, since it uses less digits than its factorization.

1478978450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29579581 (or 29579576 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 53.

The square root of 1478978450 is about 38457.4888675795. The cubic root of 1478978450 is about 1139.3415839940.

It can be divided in two parts, 14789 and 78450, that added together give a palindrome (93239).

The spelling of 1478978450 in words is "one billion, four hundred seventy-eight million, nine hundred seventy-eight thousand, four hundred fifty".