4979573138 has 4 divisors (see below), whose sum is σ = 7469359710. Its totient is φ = 2489786568.

The previous prime is 4979573119. The next prime is 4979573149. The reversal of 4979573138 is 8313759794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8313759794 = 2 ⋅4156879897.

It can be written as a sum of positive squares in only one way, i.e., 4925653489 + 53919649 = 70183^2 + 7343^2 .

It is a super-2 number, since 2×4979573138² = 49592297273382334088, which contains 22 as substring.

It is a Curzon number.

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 as a sum of consecutive naturals, namely, 1244893283 + ... + 1244893286.

Almost surely, 2^4979573138 is an apocalyptic number.

4979573138 is a deficient number, since it is larger than the sum of its proper divisors (2489786572).

4979573138 is a wasteful number, since it uses less digits than its factorization.

4979573138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489786571.

The product of its digits is 5715360, while the sum is 56.

The square root of 4979573138 is about 70566.0905676374. The cubic root of 4979573138 is about 1707.6441388411.

The spelling of 4979573138 in words is "four billion, nine hundred seventy-nine million, five hundred seventy-three thousand, one hundred thirty-eight".