1478634663 has 32 divisors (see below), whose sum is σ = 2325162240. Its totient is φ = 826018560.

The previous prime is 1478634631. The next prime is 1478634667. The reversal of 1478634663 is 3664368741.

It is not a de Polignac number, because 1478634663 - 2⁵ = 1478634631 is a prime.

It is a congruent number.

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 (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8670 + ... + 55067.

It is an arithmetic number, because the mean of its divisors is an integer number (72661320).

Almost surely, 2^1478634663 is an apocalyptic number.

1478634663 is a deficient number, since it is larger than the sum of its proper divisors (846527577).

1478634663 is a wasteful number, since it uses less digits than its factorization.

1478634663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63807.

The product of its digits is 1741824, while the sum is 48.

The square root of 1478634663 is about 38453.0189061925. The cubic root of 1478634663 is about 1139.2532975648.

The spelling of 1478634663 in words is "one billion, four hundred seventy-eight million, six hundred thirty-four thousand, six hundred sixty-three".