141388661 has 2 divisors, whose sum is σ = 141388662. Its totient is φ = 141388660.

The previous prime is 141388649. The next prime is 141388679. The reversal of 141388661 is 166883141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139972561 + 1416100 = 11831^2 + 1190^2 .

It is a cyclic number.

It is not a de Polignac number, because 141388661 - 2¹⁴ = 141372277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141388631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70694330 + 70694331.

It is an arithmetic number, because the mean of its divisors is an integer number (70694331).

Almost surely, 2^141388661 is an apocalyptic number.

It is an amenable number.

141388661 is a deficient number, since it is larger than the sum of its proper divisors (1).

141388661 is an equidigital number, since it uses as much as digits as its factorization.

141388661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The square root of 141388661 is about 11890.6964051732. The cubic root of 141388661 is about 520.9605777695.

The spelling of 141388661 in words is "one hundred forty-one million, three hundred eighty-eight thousand, six hundred sixty-one".