478196978 has 48 divisors (see below), whose sum is σ = 930048480. Its totient is φ = 182722176.

The previous prime is 478196969. The next prime is 478196987. The reversal of 478196978 is 879691874.

It is an interprime number because it is at equal distance from previous prime (478196969) and next prime (478196987).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 24101 + ... + 39207.

It is an arithmetic number, because the mean of its divisors is an integer number (19376010).

Almost surely, 2^478196978 is an apocalyptic number.

478196978 is a deficient number, since it is larger than the sum of its proper divisors (451851502).

478196978 is a wasteful number, since it uses less digits than its factorization.

478196978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15159 (or 15152 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 59.

The square root of 478196978 is about 21867.7154270857. The cubic root of 478196978 is about 781.9919380910.

The spelling of 478196978 in words is "four hundred seventy-eight million, one hundred ninety-six thousand, nine hundred seventy-eight".