4978893655 has 4 divisors (see below), whose sum is σ = 5974672392. Its totient is φ = 3983114920.

The previous prime is 4978893643. The next prime is 4978893701. The reversal of 4978893655 is 5563988794.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4978893655 - 2¹¹ = 4978891607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497889361 + ... + 497889370.

It is an arithmetic number, because the mean of its divisors is an integer number (1493668098).

Almost surely, 2^4978893655 is an apocalyptic number.

4978893655 is a deficient number, since it is larger than the sum of its proper divisors (995778737).

4978893655 is an equidigital number, since it uses as much as digits as its factorization.

4978893655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995778736.

The product of its digits is 65318400, while the sum is 64.

The square root of 4978893655 is about 70561.2758884078. The cubic root of 4978893655 is about 1707.5664636461.

The spelling of 4978893655 in words is "four billion, nine hundred seventy-eight million, eight hundred ninety-three thousand, six hundred fifty-five".