1945139563427 has 2 divisors, whose sum is σ = 1945139563428. Its totient is φ = 1945139563426.

The previous prime is 1945139563351. The next prime is 1945139563469. The reversal of 1945139563427 is 7243659315491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1945139563427 - 2¹² = 1945139559331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1945139569427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972569781713 + 972569781714.

It is an arithmetic number, because the mean of its divisors is an integer number (972569781714).

Almost surely, 2^{1945139563427} is an apocalyptic number.

1945139563427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945139563427 is an equidigital number, since it uses as much as digits as its factorization.

1945139563427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24494400, while the sum is 59.

The spelling of 1945139563427 in words is "one trillion, nine hundred forty-five billion, one hundred thirty-nine million, five hundred sixty-three thousand, four hundred twenty-seven".