1478889984 has 160 divisors (see below), whose sum is σ = 4629328704. Its totient is φ = 413614080.

The previous prime is 1478889953. The next prime is 1478889989. The reversal of 1478889984 is 4899888741.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (1478889989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216282 + ... + 223014.

Almost surely, 2^1478889984 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 1478889984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2314664352).

1478889984 is an abundant number, since it is smaller than the sum of its proper divisors (3150438720).

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

1478889984 is a wasteful number, since it uses less digits than its factorization.

1478889984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6778 (or 6762 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 66.

The square root of 1478889984 is about 38456.3386712776. The cubic root of 1478889984 is about 1139.3188667366.

The spelling of 1478889984 in words is "one billion, four hundred seventy-eight million, eight hundred eighty-nine thousand, nine hundred eighty-four".