402144444187 has 2 divisors, whose sum is σ = 402144444188. Its totient is φ = 402144444186.

The previous prime is 402144444181. The next prime is 402144444241. The reversal of 402144444187 is 781444441204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402144444187 - 2³ = 402144444179 is a prime.

It is not a weakly prime, because it can be changed into another prime (402144444181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201072222093 + 201072222094.

It is an arithmetic number, because the mean of its divisors is an integer number (201072222094).

Almost surely, 2^402144444187 is an apocalyptic number.

402144444187 is a deficient number, since it is larger than the sum of its proper divisors (1).

402144444187 is an equidigital number, since it uses as much as digits as its factorization.

402144444187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 458752, while the sum is 43.

The spelling of 402144444187 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-four thousand, one hundred eighty-seven".