4981138 has 8 divisors (see below), whose sum is σ = 7594380. Its totient is φ = 2449680.

The previous prime is 4981103. The next prime is 4981157. The reversal of 4981138 is 8311894.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4959529 + 21609 = 2227^2 + 147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20293 + ... + 20536.

Almost surely, 2^4981138 is an apocalyptic number.

4981138 is a deficient number, since it is larger than the sum of its proper divisors (2613242).

4981138 is a wasteful number, since it uses less digits than its factorization.

4981138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40892.

The product of its digits is 6912, while the sum is 34.

The square root of 4981138 is about 2231.8463208743. The cubic root of 4981138 is about 170.7822999390.

It can be divided in two parts, 4981 and 138, that multiplied together give a triangular number (687378 = T₁₁₇₂).

The spelling of 4981138 in words is "four million, nine hundred eighty-one thousand, one hundred thirty-eight".