83718529 has 2 divisors, whose sum is σ = 83718530. Its totient is φ = 83718528.

The previous prime is 83718493. The next prime is 83718559. The reversal of 83718529 is 92581738.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83539600 + 178929 = 9140^2 + 423^2 .

It is a cyclic number.

It is not a de Polignac number, because 83718529 - 2²³ = 75329921 is a prime.

It is not a weakly prime, because it can be changed into another prime (83718559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41859264 + 41859265.

It is an arithmetic number, because the mean of its divisors is an integer number (41859265).

Almost surely, 2^83718529 is an apocalyptic number.

It is an amenable number.

83718529 is a deficient number, since it is larger than the sum of its proper divisors (1).

83718529 is an equidigital number, since it uses as much as digits as its factorization.

83718529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 43.

The square root of 83718529 is about 9149.7830028914. The cubic root of 83718529 is about 437.4621968969.

It can be divided in two parts, 8371 and 8529, that added together give a square (16900 = 130²).

The spelling of 83718529 in words is "eighty-three million, seven hundred eighteen thousand, five hundred twenty-nine".