1983194513 has 2 divisors, whose sum is σ = 1983194514. Its totient is φ = 1983194512.

The previous prime is 1983194497. The next prime is 1983194533. The reversal of 1983194513 is 3154913891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1579506049 + 403688464 = 39743^2 + 20092^2 .

It is a cyclic number.

It is not a de Polignac number, because 1983194513 - 2⁴ = 1983194497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1983194533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991597256 + 991597257.

It is an arithmetic number, because the mean of its divisors is an integer number (991597257).

Almost surely, 2^1983194513 is an apocalyptic number.

It is an amenable number.

1983194513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1983194513 is an equidigital number, since it uses as much as digits as its factorization.

1983194513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 44.

The square root of 1983194513 is about 44533.0721262300. The cubic root of 1983194513 is about 1256.3821881214.

The spelling of 1983194513 in words is "one billion, nine hundred eighty-three million, one hundred ninety-four thousand, five hundred thirteen".