1973696797 has 2 divisors, whose sum is σ = 1973696798. Its totient is φ = 1973696796.

The previous prime is 1973696749. The next prime is 1973696807. The reversal of 1973696797 is 7976963791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1958416516 + 15280281 = 44254^2 + 3909^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1973696797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1973696717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986848398 + 986848399.

It is an arithmetic number, because the mean of its divisors is an integer number (986848399).

Almost surely, 2^1973696797 is an apocalyptic number.

It is an amenable number.

1973696797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973696797 is an equidigital number, since it uses as much as digits as its factorization.

1973696797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27005076, while the sum is 64.

The square root of 1973696797 is about 44426.3074877938. The cubic root of 1973696797 is about 1254.3733313608.

The spelling of 1973696797 in words is "one billion, nine hundred seventy-three million, six hundred ninety-six thousand, seven hundred ninety-seven".