2081518142 has 16 divisors (see below), whose sum is σ = 3439193472. Its totient is φ = 936957720.

The previous prime is 2081518133. The next prime is 2081518177. The reversal of 2081518142 is 2418151802.

It is a junction number, because it is equal to n+sod(n) for n = 2081518099 and 2081518108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457028 + ... + 461559.

It is an arithmetic number, because the mean of its divisors is an integer number (214949592).

Almost surely, 2^2081518142 is an apocalyptic number.

2081518142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2081518142 is a deficient number, since it is larger than the sum of its proper divisors (1357675330).

2081518142 is a wasteful number, since it uses less digits than its factorization.

2081518142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918703.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 2081518142 is about 45623.6577008026. The cubic root of 2081518142 is about 1276.8113466761.

Adding to 2081518142 its reverse (2418151802), we get a palindrome (4499669944).

The spelling of 2081518142 in words is "two billion, eighty-one million, five hundred eighteen thousand, one hundred forty-two".