1973685433 has 2 divisors, whose sum is σ = 1973685434. Its totient is φ = 1973685432.

The previous prime is 1973685421. The next prime is 1973685443. The reversal of 1973685433 is 3345863791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1222761024 + 750924409 = 34968^2 + 27403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1973685433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1973685443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986842716 + 986842717.

It is an arithmetic number, because the mean of its divisors is an integer number (986842717).

Almost surely, 2^1973685433 is an apocalyptic number.

It is an amenable number.

1973685433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973685433 is an equidigital number, since it uses as much as digits as its factorization.

1973685433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 49.

The square root of 1973685433 is about 44426.1795904172. The cubic root of 1973685433 is about 1254.3709239113.

The spelling of 1973685433 in words is "one billion, nine hundred seventy-three million, six hundred eighty-five thousand, four hundred thirty-three".