83145649 has 2 divisors, whose sum is σ = 83145650. Its totient is φ = 83145648.

The previous prime is 83145611. The next prime is 83145677. The reversal of 83145649 is 94654138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79977249 + 3168400 = 8943^2 + 1780^2 .

It is a cyclic number.

It is not a de Polignac number, because 83145649 - 2²¹ = 81048497 is a prime.

It is not a weakly prime, because it can be changed into another prime (83143649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41572824 + 41572825.

It is an arithmetic number, because the mean of its divisors is an integer number (41572825).

Almost surely, 2^83145649 is an apocalyptic number.

It is an amenable number.

83145649 is a deficient number, since it is larger than the sum of its proper divisors (1).

83145649 is an equidigital number, since it uses as much as digits as its factorization.

83145649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 83145649 is about 9118.4236027945. The cubic root of 83145649 is about 436.4620711476.

The spelling of 83145649 in words is "eighty-three million, one hundred forty-five thousand, six hundred forty-nine".