1999999596923 has 2 divisors, whose sum is σ = 1999999596924. Its totient is φ = 1999999596922.

The previous prime is 1999999596871. The next prime is 1999999596929. The reversal of 1999999596923 is 3296959999991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1999999596923 - 2³⁸ = 1725121689979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1999999596929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999999798461 + 999999798462.

It is an arithmetic number, because the mean of its divisors is an integer number (999999798462).

Almost surely, 2^{1999999596923} is an apocalyptic number.

1999999596923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999999596923 is an equidigital number, since it uses as much as digits as its factorization.

1999999596923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7748409780, while the sum is 89.

The spelling of 1999999596923 in words is "one trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, five hundred ninety-six thousand, nine hundred twenty-three".