83781043 has 2 divisors, whose sum is σ = 83781044. Its totient is φ = 83781042.

The previous prime is 83781041. The next prime is 83781053. The reversal of 83781043 is 34018738.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83781043 - 2¹ = 83781041 is a prime.

Together with 83781041, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (83781041) 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 as a sum of consecutive naturals, namely, 41890521 + 41890522.

It is an arithmetic number, because the mean of its divisors is an integer number (41890522).

Almost surely, 2^83781043 is an apocalyptic number.

83781043 is a deficient number, since it is larger than the sum of its proper divisors (1).

83781043 is an equidigital number, since it uses as much as digits as its factorization.

83781043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 83781043 is about 9153.1985119957. The cubic root of 83781043 is about 437.5710565404.

The spelling of 83781043 in words is "eighty-three million, seven hundred eighty-one thousand, forty-three".