2081138 has 8 divisors (see below), whose sum is σ = 3139500. Its totient is φ = 1034640.

The previous prime is 2081129. The next prime is 2081147. The reversal of 2081138 is 8311802.

It is an interprime number because it is at equal distance from previous prime (2081129) and next prime (2081147).

It can be written as a sum of positive squares in 2 ways, for example, as 1283689 + 797449 = 1133^2 + 893^2 .

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

It is a super-2 number, since 2×2081138² = 8662270750088, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2513 + ... + 3236.

2^2081138 is an apocalyptic number.

2081138 is a deficient number, since it is larger than the sum of its proper divisors (1058362).

2081138 is a wasteful number, since it uses less digits than its factorization.

2081138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5932.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 2081138 is about 1442.6149867515. The cubic root of 2081138 is about 127.6733615082.

The spelling of 2081138 in words is "two million, eighty-one thousand, one hundred thirty-eight".