1448015778 has 80 divisors (see below), whose sum is σ = 3626108640. Its totient is φ = 428068800.

The previous prime is 1448015771. The next prime is 1448015813. The reversal of 1448015778 is 8775108441.

1448015778 is a `hidden beast` number, since 14 + 480 + 157 + 7 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (1448015771) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 63153 + ... + 82971.

It is an arithmetic number, because the mean of its divisors is an integer number (45326358).

Almost surely, 2^1448015778 is an apocalyptic number.

1448015778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1448015778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1813054320).

1448015778 is an abundant number, since it is smaller than the sum of its proper divisors (2178092862).

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

1448015778 is a wasteful number, since it uses less digits than its factorization.

1448015778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19885 (or 19876 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The square root of 1448015778 is about 38052.8024986334. The cubic root of 1448015778 is about 1131.3346742964.

The spelling of 1448015778 in words is "one billion, four hundred forty-eight million, fifteen thousand, seven hundred seventy-eight".