2981311538 has 32 divisors (see below), whose sum is σ = 4577126400. Its totient is φ = 1456164864.

The previous prime is 2981311523. The next prime is 2981311547. The reversal of 2981311538 is 8351131892.

It is a super-2 number, since 2×2981311538² = 17776436973223850888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2981311495 and 2981311504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7115093 + ... + 7115511.

It is an arithmetic number, because the mean of its divisors is an integer number (143035200).

Almost surely, 2^2981311538 is an apocalyptic number.

2981311538 is a deficient number, since it is larger than the sum of its proper divisors (1595814862).

2981311538 is a wasteful number, since it uses less digits than its factorization.

2981311538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914.

The product of its digits is 51840, while the sum is 41.

The square root of 2981311538 is about 54601.3876929882. The cubic root of 2981311538 is about 1439.2485048106.

The spelling of 2981311538 in words is "two billion, nine hundred eighty-one million, three hundred eleven thousand, five hundred thirty-eight".