1973784913 has 2 divisors, whose sum is σ = 1973784914. Its totient is φ = 1973784912.

The previous prime is 1973784907. The next prime is 1973784919. The reversal of 1973784913 is 3194873791.

It is a balanced prime because it is at equal distance from previous prime (1973784907) and next prime (1973784919).

It can be written as a sum of positive squares in only one way, i.e., 1722499009 + 251285904 = 41503^2 + 15852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1973784913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1973784919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986892456 + 986892457.

It is an arithmetic number, because the mean of its divisors is an integer number (986892457).

Almost surely, 2^1973784913 is an apocalyptic number.

It is an amenable number.

1973784913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973784913 is an equidigital number, since it uses as much as digits as its factorization.

1973784913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 52.

The square root of 1973784913 is about 44427.2991864237. The cubic root of 1973784913 is about 1254.3919983137.

The spelling of 1973784913 in words is "one billion, nine hundred seventy-three million, seven hundred eighty-four thousand, nine hundred thirteen".