1973984497 has 2 divisors, whose sum is σ = 1973984498. Its totient is φ = 1973984496.

The previous prime is 1973984491. The next prime is 1973984503. The reversal of 1973984497 is 7944893791.

It is a balanced prime because it is at equal distance from previous prime (1973984491) and next prime (1973984503).

It can be written as a sum of positive squares in only one way, i.e., 1355417856 + 618566641 = 36816^2 + 24871^2 .

It is an emirp because it is prime and its reverse (7944893791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1973984497 - 2²⁷ = 1839766769 is a prime.

It is a super-2 number, since 2×1973984497² = 7793229588792686018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1973984491) 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, 986992248 + 986992249.

It is an arithmetic number, because the mean of its divisors is an integer number (986992249).

Almost surely, 2^1973984497 is an apocalyptic number.

It is an amenable number.

1973984497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973984497 is an equidigital number, since it uses as much as digits as its factorization.

1973984497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 61.

The square root of 1973984497 is about 44429.5453161520. The cubic root of 1973984497 is about 1254.4342771748.

The spelling of 1973984497 in words is "one billion, nine hundred seventy-three million, nine hundred eighty-four thousand, four hundred ninety-seven".