1178394448 has 120 divisors (see below), whose sum is σ = 2922759360. Its totient is φ = 447129600.

The previous prime is 1178394431. The next prime is 1178394461. The reversal of 1178394448 is 8444938711.

It is a super-2 number, since 2×1178394448² = 2777226950154449408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2070708 + ... + 2071276.

It is an arithmetic number, because the mean of its divisors is an integer number (24356328).

Almost surely, 2^1178394448 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 1178394448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1461379680).

1178394448 is an abundant number, since it is smaller than the sum of its proper divisors (1744364912).

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

1178394448 is a wasteful number, since it uses less digits than its factorization.

1178394448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 630 counting only the distinct ones).

The product of its digits is 774144, while the sum is 49.

The square root of 1178394448 is about 34327.7504069230. The cubic root of 1178394448 is about 1056.2423160255.

The spelling of 1178394448 in words is "one billion, one hundred seventy-eight million, three hundred ninety-four thousand, four hundred forty-eight".