1478403894 has 96 divisors (see below), whose sum is σ = 3411813888. Its totient is φ = 426254400.

The previous prime is 1478403877. The next prime is 1478403907. The reversal of 1478403894 is 4983048741.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1261929 + ... + 1263099.

It is an arithmetic number, because the mean of its divisors is an integer number (35539728).

Almost surely, 2^1478403894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1478403894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1705906944).

1478403894 is an abundant number, since it is smaller than the sum of its proper divisors (1933409994).

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

1478403894 is a wasteful number, since it uses less digits than its factorization.

1478403894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 1478403894 is about 38450.0181274340. The cubic root of 1478403894 is about 1139.1940271155.

The spelling of 1478403894 in words is "one billion, four hundred seventy-eight million, four hundred three thousand, eight hundred ninety-four".