1148778368 has 64 divisors (see below), whose sum is σ = 2405523120. Its totient is φ = 545771520.

The previous prime is 1148778329. The next prime is 1148778409. The reversal of 1148778368 is 8638778411.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200828 + ... + 206468.

Almost surely, 2^1148778368 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 1148778368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1202761560).

1148778368 is an abundant number, since it is smaller than the sum of its proper divisors (1256744752).

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

1148778368 is an equidigital number, since it uses as much as digits as its factorization.

1148778368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735 (or 5723 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 53.

The square root of 1148778368 is about 33893.6331484248. The cubic root of 1148778368 is about 1047.3184388074.

The spelling of 1148778368 in words is "one billion, one hundred forty-eight million, seven hundred seventy-eight thousand, three hundred sixty-eight".