1956678190723 has 2 divisors, whose sum is σ = 1956678190724. Its totient is φ = 1956678190722.

The previous prime is 1956678190679. The next prime is 1956678190757. The reversal of 1956678190723 is 3270918766591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1956678190723 - 2²¹ = 1956676093571 is a prime.

It is not a weakly prime, because it can be changed into another prime (1956678190763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978339095361 + 978339095362.

It is an arithmetic number, because the mean of its divisors is an integer number (978339095362).

Almost surely, 2^{1956678190723} is an apocalyptic number.

1956678190723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956678190723 is an equidigital number, since it uses as much as digits as its factorization.

1956678190723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34292160, while the sum is 64.

The spelling of 1956678190723 in words is "one trillion, nine hundred fifty-six billion, six hundred seventy-eight million, one hundred ninety thousand, seven hundred twenty-three".