1791432920939 has 2 divisors, whose sum is σ = 1791432920940. Its totient is φ = 1791432920938.

The previous prime is 1791432920911. The next prime is 1791432920947. The reversal of 1791432920939 is 9390292341971.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1791432920939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1791432920999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895716460469 + 895716460470.

It is an arithmetic number, because the mean of its divisors is an integer number (895716460470).

Almost surely, 2^{1791432920939} is an apocalyptic number.

1791432920939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1791432920939 is an equidigital number, since it uses as much as digits as its factorization.

1791432920939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6613488, while the sum is 59.

The spelling of 1791432920939 in words is "one trillion, seven hundred ninety-one billion, four hundred thirty-two million, nine hundred twenty thousand, nine hundred thirty-nine".