141985817 has 2 divisors, whose sum is σ = 141985818. Its totient is φ = 141985816.

The previous prime is 141985813. The next prime is 141985847. The reversal of 141985817 is 718589141.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97042201 + 44943616 = 9851^2 + 6704^2 .

It is a cyclic number.

It is not a de Polignac number, because 141985817 - 2² = 141985813 is a prime.

It is not a weakly prime, because it can be changed into another prime (141985813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70992908 + 70992909.

It is an arithmetic number, because the mean of its divisors is an integer number (70992909).

Almost surely, 2^141985817 is an apocalyptic number.

It is an amenable number.

141985817 is a deficient number, since it is larger than the sum of its proper divisors (1).

141985817 is an equidigital number, since it uses as much as digits as its factorization.

141985817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 44.

The square root of 141985817 is about 11915.7801674922. The cubic root of 141985817 is about 521.6929745239.

The spelling of 141985817 in words is "one hundred forty-one million, nine hundred eighty-five thousand, eight hundred seventeen".