83808157 has 2 divisors, whose sum is σ = 83808158. Its totient is φ = 83808156.

The previous prime is 83808149. The next prime is 83808163. The reversal of 83808157 is 75180838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68079001 + 15729156 = 8251^2 + 3966^2 .

It is a cyclic number.

It is not a de Polignac number, because 83808157 - 2³ = 83808149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83802157) 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 as a sum of consecutive naturals, namely, 41904078 + 41904079.

It is an arithmetic number, because the mean of its divisors is an integer number (41904079).

Almost surely, 2^83808157 is an apocalyptic number.

It is an amenable number.

83808157 is a deficient number, since it is larger than the sum of its proper divisors (1).

83808157 is an equidigital number, since it uses as much as digits as its factorization.

83808157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 83808157 is about 9154.6795137787. The cubic root of 83808157 is about 437.6182550535.

The spelling of 83808157 in words is "eighty-three million, eight hundred eight thousand, one hundred fifty-seven".