4689331978 has 16 divisors (see below), whose sum is σ = 7074687816. Its totient is φ = 2331141120.

The previous prime is 4689331967. The next prime is 4689332017. The reversal of 4689331978 is 8791339864.

It can be written as a sum of positive squares in 4 ways, for example, as 4669945569 + 19386409 = 68337^2 + 4403^2 .

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 7 ways as a sum of consecutive naturals, for example, 244498 + ... + 262978.

Almost surely, 2^4689331978 is an apocalyptic number.

4689331978 is a deficient number, since it is larger than the sum of its proper divisors (2385355838).

4689331978 is a wasteful number, since it uses less digits than its factorization.

4689331978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19209.

The product of its digits is 7838208, while the sum is 58.

The square root of 4689331978 is about 68478.6972568842. The cubic root of 4689331978 is about 1673.8003710642.

The spelling of 4689331978 in words is "four billion, six hundred eighty-nine million, three hundred thirty-one thousand, nine hundred seventy-eight".