1926979376873 has 2 divisors, whose sum is σ = 1926979376874. Its totient is φ = 1926979376872.

The previous prime is 1926979376849. The next prime is 1926979376899. The reversal of 1926979376873 is 3786739796291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1852342776064 + 74636600809 = 1361008^2 + 273197^2 .

It is a cyclic number.

It is not a de Polignac number, because 1926979376873 - 2²⁸ = 1926710941417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1926979376794 and 1926979376803.

It is not a weakly prime, because it can be changed into another prime (1926979376473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963489688436 + 963489688437.

It is an arithmetic number, because the mean of its divisors is an integer number (963489688437).

Almost surely, 2^{1926979376873} is an apocalyptic number.

It is an amenable number.

1926979376873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1926979376873 is an equidigital number, since it uses as much as digits as its factorization.

1926979376873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296243648, while the sum is 77.

The spelling of 1926979376873 in words is "one trillion, nine hundred twenty-six billion, nine hundred seventy-nine million, three hundred seventy-six thousand, eight hundred seventy-three".