1995993731 has 2 divisors, whose sum is σ = 1995993732. Its totient is φ = 1995993730.

The previous prime is 1995993707. The next prime is 1995993733. The reversal of 1995993731 is 1373995991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1995993731 - 2¹⁰ = 1995992707 is a prime.

It is a super-2 number, since 2×1995993731² = 7967981948382600722, which contains 22 as substring.

Together with 1995993733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1995993733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997996865 + 997996866.

It is an arithmetic number, because the mean of its divisors is an integer number (997996866).

Almost surely, 2^1995993731 is an apocalyptic number.

1995993731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1995993731 is an equidigital number, since it uses as much as digits as its factorization.

1995993731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2066715, while the sum is 56.

The square root of 1995993731 is about 44676.5456475766. The cubic root of 1995993731 is about 1259.0792237733.

The spelling of 1995993731 in words is "one billion, nine hundred ninety-five million, nine hundred ninety-three thousand, seven hundred thirty-one".