143601389 has 2 divisors, whose sum is σ = 143601390. Its totient is φ = 143601388.

The previous prime is 143601349. The next prime is 143601421. The reversal of 143601389 is 983106341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142611364 + 990025 = 11942^2 + 995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143601389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143601319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71800694 + 71800695.

It is an arithmetic number, because the mean of its divisors is an integer number (71800695).

Almost surely, 2^143601389 is an apocalyptic number.

It is an amenable number.

143601389 is a deficient number, since it is larger than the sum of its proper divisors (1).

143601389 is an equidigital number, since it uses as much as digits as its factorization.

143601389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 143601389 is about 11983.3796985658. The cubic root of 143601389 is about 523.6641946989.

The spelling of 143601389 in words is "one hundred forty-three million, six hundred one thousand, three hundred eighty-nine".