402343201402189 has 2 divisors, whose sum is σ = 402343201402190. Its totient is φ = 402343201402188.

The previous prime is 402343201401871. The next prime is 402343201402193. The reversal of 402343201402189 is 981204102343204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348467454602089 + 53875746800100 = 18667283^2 + 7340010^2 .

It is a cyclic number.

It is not a de Polignac number, because 402343201402189 - 2¹³ = 402343201393997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402343201402199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201171600701094 + 201171600701095.

It is an arithmetic number, because the mean of its divisors is an integer number (201171600701095).

Almost surely, 2^{402343201402189} is an apocalyptic number.

It is an amenable number.

402343201402189 is a deficient number, since it is larger than the sum of its proper divisors (1).

402343201402189 is an equidigital number, since it uses as much as digits as its factorization.

402343201402189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 402343201402189 in words is "four hundred two trillion, three hundred forty-three billion, two hundred one million, four hundred two thousand, one hundred eighty-nine".