1981741336 has 16 divisors (see below), whose sum is σ = 3716765640. Its totient is φ = 990603840.

The previous prime is 1981741277. The next prime is 1981741337. The reversal of 1981741336 is 6331471891.

1981741336 is nontrivially palindromic in base 3.

It is a super-2 number, since 2×1981741336² = 7854597445622129792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1981741292 and 1981741301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1981741337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196 + ... + 62956.

Almost surely, 2^1981741336 is an apocalyptic number.

It is an amenable number.

1981741336 is a deficient number, since it is larger than the sum of its proper divisors (1735024304).

1981741336 is a wasteful number, since it uses less digits than its factorization.

1981741336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66714 (or 66710 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 1981741336 is about 44516.7534305906. The cubic root of 1981741336 is about 1256.0752436430.

The spelling of 1981741336 in words is "one billion, nine hundred eighty-one million, seven hundred forty-one thousand, three hundred thirty-six".