1993741697 has 2 divisors, whose sum is σ = 1993741698. Its totient is φ = 1993741696.

The previous prime is 1993741679. The next prime is 1993741753. The reversal of 1993741697 is 7961473991.

It is a happy number.

Together with previous prime (1993741679) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (1993741753) can be obtained adding 1993741697 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1890597361 + 103144336 = 43481^2 + 10156^2 .

It is a cyclic number.

It is not a de Polignac number, because 1993741697 - 2¹⁰ = 1993740673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1993741597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996870848 + 996870849.

It is an arithmetic number, because the mean of its divisors is an integer number (996870849).

Almost surely, 2^1993741697 is an apocalyptic number.

It is an amenable number.

1993741697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993741697 is an equidigital number, since it uses as much as digits as its factorization.

1993741697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2571912, while the sum is 56.

The square root of 1993741697 is about 44651.3347728822. The cubic root of 1993741697 is about 1258.6055154893.

The spelling of 1993741697 in words is "one billion, nine hundred ninety-three million, seven hundred forty-one thousand, six hundred ninety-seven".