1887220387163 has 2 divisors, whose sum is σ = 1887220387164. Its totient is φ = 1887220387162.

The previous prime is 1887220387033. The next prime is 1887220387177. The reversal of 1887220387163 is 3617830227881.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1887220387163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1887220387099 and 1887220387108.

It is not a weakly prime, because it can be changed into another prime (1887220387763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 943610193581 + 943610193582.

It is an arithmetic number, because the mean of its divisors is an integer number (943610193582).

Almost surely, 2^{1887220387163} is an apocalyptic number.

1887220387163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1887220387163 is an equidigital number, since it uses as much as digits as its factorization.

1887220387163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 1887220387163 in words is "one trillion, eight hundred eighty-seven billion, two hundred twenty million, three hundred eighty-seven thousand, one hundred sixty-three".