4985894978 has 16 divisors (see below), whose sum is σ = 7708646880. Its totient is φ = 2417192736.

The previous prime is 4985894957. The next prime is 4985894999. The reversal of 4985894978 is 8794985894.

It is an interprime number because it is at equal distance from previous prime (4985894957) and next prime (4985894999).

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, 199808 + ... + 223371.

It is an arithmetic number, because the mean of its divisors is an integer number (481790430).

Almost surely, 2^4985894978 is an apocalyptic number.

4985894978 is a deficient number, since it is larger than the sum of its proper divisors (2722751902).

4985894978 is a wasteful number, since it uses less digits than its factorization.

4985894978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423361.

The product of its digits is 209018880, while the sum is 71.

The square root of 4985894978 is about 70610.8701121860. The cubic root of 4985894978 is about 1708.3664824015.

The spelling of 4985894978 in words is "four billion, nine hundred eighty-five million, eight hundred ninety-four thousand, nine hundred seventy-eight".