478863187 has 10 divisors (see below), whose sum is σ = 526762340. Its totient is φ = 435316860.

The previous prime is 478863173. The next prime is 478863211. The reversal of 478863187 is 781368874.

It is a de Polignac number, because none of the positive numbers 2^k-478863187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478863587) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 1713 + ... + 30994.

It is an arithmetic number, because the mean of its divisors is an integer number (52676234).

Almost surely, 2^478863187 is an apocalyptic number.

478863187 is a deficient number, since it is larger than the sum of its proper divisors (47899153).

478863187 is an frugal number, since it uses more digits than its factorization.

478863187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32751 (or 32718 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 52.

The square root of 478863187 is about 21882.9428322609. The cubic root of 478863187 is about 782.3549184423.

The spelling of 478863187 in words is "four hundred seventy-eight million, eight hundred sixty-three thousand, one hundred eighty-seven".