1478081736 has 128 divisors (see below), whose sum is σ = 4279910400. Its totient is φ = 472115520.

The previous prime is 1478081723. The next prime is 1478081783. The reversal of 1478081736 is 6371808741.

1478081736 is a `hidden beast` number, since 1 + 478 + 0 + 8 + 173 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1478081691 and 1478081700.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 715441 + ... + 717503.

It is an arithmetic number, because the mean of its divisors is an integer number (33436800).

Almost surely, 2^1478081736 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 1478081736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2139955200).

1478081736 is an abundant number, since it is smaller than the sum of its proper divisors (2801828664).

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

1478081736 is a wasteful number, since it uses less digits than its factorization.

1478081736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216 (or 2206 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 1478081736 is about 38445.8285903686. The cubic root of 1478081736 is about 1139.1112741024. Note that the first 3 decimals are identical.

The spelling of 1478081736 in words is "one billion, four hundred seventy-eight million, eighty-one thousand, seven hundred thirty-six".