1478634664 has 64 divisors (see below), whose sum is σ = 3061175040. Its totient is φ = 665314560.

The previous prime is 1478634631. The next prime is 1478634667. The reversal of 1478634664 is 4664368741.

It is not an unprimeable number, because it can be changed into a prime (1478634667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1822819 + ... + 1823629.

It is an arithmetic number, because the mean of its divisors is an integer number (47830860).

Almost surely, 2^1478634664 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 1478634664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530587520).

1478634664 is an abundant number, since it is smaller than the sum of its proper divisors (1582540376).

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

1478634664 is a wasteful number, since it uses less digits than its factorization.

1478634664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250 (or 1246 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 49.

The square root of 1478634664 is about 38453.0189191954. The cubic root of 1478634664 is about 1139.2532978216.

The spelling of 1478634664 in words is "one billion, four hundred seventy-eight million, six hundred thirty-four thousand, six hundred sixty-four".