141538681 has 2 divisors, whose sum is σ = 141538682. Its totient is φ = 141538680.

The previous prime is 141538643. The next prime is 141538697. The reversal of 141538681 is 186835141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120231225 + 21307456 = 10965^2 + 4616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-141538681 is a prime.

It is a super-2 number, since 2×141538681² = 40066396438439522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 141538681.

It is not a weakly prime, because it can be changed into another prime (141538781) 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, 70769340 + 70769341.

It is an arithmetic number, because the mean of its divisors is an integer number (70769341).

Almost surely, 2^141538681 is an apocalyptic number.

It is an amenable number.

141538681 is a deficient number, since it is larger than the sum of its proper divisors (1).

141538681 is an equidigital number, since it uses as much as digits as its factorization.

141538681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 37.

The square root of 141538681 is about 11897.0030259725. The cubic root of 141538681 is about 521.1447671751.

The spelling of 141538681 in words is "one hundred forty-one million, five hundred thirty-eight thousand, six hundred eighty-one".