1981741335 has 16 divisors (see below), whose sum is σ = 3623755776. Its totient is φ = 905938848.

The previous prime is 1981741277. The next prime is 1981741337. The reversal of 1981741335 is 5331471891.

It is not a de Polignac number, because 1981741335 - 2⁶ = 1981741271 is a prime.

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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9436759 + ... + 9436968.

It is an arithmetic number, because the mean of its divisors is an integer number (226484736).

Almost surely, 2^1981741335 is an apocalyptic number.

1981741335 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1981741335 is a deficient number, since it is larger than the sum of its proper divisors (1642014441).

1981741335 is a wasteful number, since it uses less digits than its factorization.

1981741335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18873742.

The product of its digits is 90720, while the sum is 42.

The square root of 1981741335 is about 44516.7534193589. The cubic root of 1981741335 is about 1256.0752434317.

The spelling of 1981741335 in words is "one billion, nine hundred eighty-one million, seven hundred forty-one thousand, three hundred thirty-five".