19860067973 has 2 divisors, whose sum is σ = 19860067974. Its totient is φ = 19860067972.

The previous prime is 19860067967. The next prime is 19860067987. The reversal of 19860067973 is 37976006891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14588291524 + 5271776449 = 120782^2 + 72607^2 .

It is a cyclic number.

It is not a de Polignac number, because 19860067973 - 2¹⁰ = 19860066949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19860063973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9930033986 + 9930033987.

It is an arithmetic number, because the mean of its divisors is an integer number (9930033987).

Almost surely, 2^19860067973 is an apocalyptic number.

It is an amenable number.

19860067973 is a deficient number, since it is larger than the sum of its proper divisors (1).

19860067973 is an equidigital number, since it uses as much as digits as its factorization.

19860067973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The spelling of 19860067973 in words is "nineteen billion, eight hundred sixty million, sixty-seven thousand, nine hundred seventy-three".