1578375456 has 72 divisors (see below), whose sum is σ = 4819696560. Its totient is φ = 450963072.

The previous prime is 1578375439. The next prime is 1578375503. The reversal of 1578375456 is 6545738751.

It is a junction number, because it is equal to n+sod(n) for n = 1578375399 and 1578375408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163066 + ... + 172473.

It is an arithmetic number, because the mean of its divisors is an integer number (66940230).

Almost surely, 2^1578375456 is an apocalyptic number.

1578375456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1578375456 is an abundant number, since it is smaller than the sum of its proper divisors (3241321104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1578375456 is a wasteful number, since it uses less digits than its factorization.

1578375456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335566 (or 335551 counting only the distinct ones).

The product of its digits is 3528000, while the sum is 51.

The square root of 1578375456 is about 39728.7736533611. The cubic root of 1578375456 is about 1164.3139645035.

The spelling of 1578375456 in words is "one billion, five hundred seventy-eight million, three hundred seventy-five thousand, four hundred fifty-six".