1478359638 has 96 divisors (see below), whose sum is σ = 4021056000. Its totient is φ = 382745088.

The previous prime is 1478359609. The next prime is 1478359691. The reversal of 1478359638 is 8369538741.

1478359638 is a `hidden beast` number, since 1 + 47 + 8 + 3 + 596 + 3 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41638 + ... + 68486.

It is an arithmetic number, because the mean of its divisors is an integer number (41886000).

Almost surely, 2^1478359638 is an apocalyptic number.

1478359638 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 1478359638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2010528000).

1478359638 is an abundant number, since it is smaller than the sum of its proper divisors (2542696362).

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

1478359638 is a wasteful number, since it uses less digits than its factorization.

1478359638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26906 (or 26903 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 1478359638 is about 38449.4426227481. The cubic root of 1478359638 is about 1139.1826597496.

The spelling of 1478359638 in words is "one billion, four hundred seventy-eight million, three hundred fifty-nine thousand, six hundred thirty-eight".