478776538 has 8 divisors (see below), whose sum is σ = 723820032. Its totient is φ = 237503196.

The previous prime is 478776527. The next prime is 478776541. The reversal of 478776538 is 835677874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 942220 + ... + 942727.

It is an arithmetic number, because the mean of its divisors is an integer number (90477504).

Almost surely, 2^478776538 is an apocalyptic number.

478776538 is a deficient number, since it is larger than the sum of its proper divisors (245043494).

478776538 is a wasteful number, since it uses less digits than its factorization.

478776538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885076.

The product of its digits is 7902720, while the sum is 55.

The square root of 478776538 is about 21880.9629129981. The cubic root of 478776538 is about 782.3077272595.

The spelling of 478776538 in words is "four hundred seventy-eight million, seven hundred seventy-six thousand, five hundred thirty-eight".