4664331978 has 16 divisors (see below), whose sum is σ = 9349919040. Its totient is φ = 1551234816.

The previous prime is 4664331961. The next prime is 4664332027. The reversal of 4664331978 is 8791334664.

It is a self number, because there is not a number n which added to its sum of digits gives 4664331978.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882775 + ... + 888042.

It is an arithmetic number, because the mean of its divisors is an integer number (584369940).

Almost surely, 2^4664331978 is an apocalyptic number.

4664331978 is an abundant number, since it is smaller than the sum of its proper divisors (4685587062).

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

4664331978 is a wasteful number, since it uses less digits than its factorization.

4664331978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771261.

The product of its digits is 2612736, while the sum is 51.

The square root of 4664331978 is about 68295.9147972996. The cubic root of 4664331978 is about 1670.8205868383.

The spelling of 4664331978 in words is "four billion, six hundred sixty-four million, three hundred thirty-one thousand, nine hundred seventy-eight".