1921928679163 has 2 divisors, whose sum is σ = 1921928679164. Its totient is φ = 1921928679162.

The previous prime is 1921928679101. The next prime is 1921928679193. The reversal of 1921928679163 is 3619768291291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1921928679163 - 2³³ = 1913338744571 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1921928679095 and 1921928679104.

It is not a weakly prime, because it can be changed into another prime (1921928679193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960964339581 + 960964339582.

It is an arithmetic number, because the mean of its divisors is an integer number (960964339582).

Almost surely, 2^{1921928679163} is an apocalyptic number.

1921928679163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1921928679163 is an equidigital number, since it uses as much as digits as its factorization.

1921928679163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17635968, while the sum is 64.

It can be divided in two parts, 19219286 and 79163, that added together give a square (19298449 = 4393²).

The spelling of 1921928679163 in words is "one trillion, nine hundred twenty-one billion, nine hundred twenty-eight million, six hundred seventy-nine thousand, one hundred sixty-three".