1578449152 has 108 divisors (see below), whose sum is σ = 3825190656. Its totient is φ = 646947840.

The previous prime is 1578449141. The next prime is 1578449189. The reversal of 1578449152 is 2519448751.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285777 + ... + 291247.

It is an arithmetic number, because the mean of its divisors is an integer number (35418432).

Almost surely, 2^1578449152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1578449152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1912595328).

1578449152 is an abundant number, since it is smaller than the sum of its proper divisors (2246741504).

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

1578449152 is an equidigital number, since it uses as much as digits as its factorization.

1578449152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5524 (or 5503 counting only the distinct ones).

The product of its digits is 403200, while the sum is 46.

The square root of 1578449152 is about 39729.7011315212. The cubic root of 1578449152 is about 1164.3320852335.

The spelling of 1578449152 in words is "one billion, five hundred seventy-eight million, four hundred forty-nine thousand, one hundred fifty-two".