2981138 has 12 divisors (see below), whose sum is σ = 4720590. Its totient is φ = 1411776.

The previous prime is 2981123. The next prime is 2981149. The reversal of 2981138 is 8311892.

It can be written as a sum of positive squares in only one way, i.e., 2486929 + 494209 = 1577^2 + 703^2 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1343 + ... + 2786.

2^2981138 is an apocalyptic number.

2981138 is a deficient number, since it is larger than the sum of its proper divisors (1739452).

2981138 is a wasteful number, since it uses less digits than its factorization.

2981138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169 (or 4150 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 2981138 is about 1726.5972315511. The cubic root of 2981138 is about 143.9220578717.

The spelling of 2981138 in words is "two million, nine hundred eighty-one thousand, one hundred thirty-eight".