1906878786143 has 2 divisors, whose sum is σ = 1906878786144. Its totient is φ = 1906878786142.

The previous prime is 1906878786091. The next prime is 1906878786229. The reversal of 1906878786143 is 3416878786091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1906878786143 - 2²⁴ = 1906862008927 is a prime.

It is a super-2 number, since 2×1906878786143² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1906878783143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953439393071 + 953439393072.

It is an arithmetic number, because the mean of its divisors is an integer number (953439393072).

Almost surely, 2^{1906878786143} is an apocalyptic number.

1906878786143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906878786143 is an equidigital number, since it uses as much as digits as its factorization.

1906878786143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97542144, while the sum is 68.

The spelling of 1906878786143 in words is "one trillion, nine hundred six billion, eight hundred seventy-eight million, seven hundred eighty-six thousand, one hundred forty-three".