1983366193 has 2 divisors, whose sum is σ = 1983366194. Its totient is φ = 1983366192.

The previous prime is 1983366131. The next prime is 1983366211. The reversal of 1983366193 is 3916633891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1002862224 + 980503969 = 31668^2 + 31313^2 .

It is a cyclic number.

It is not a de Polignac number, because 1983366193 - 2²¹ = 1981269041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1983366893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991683096 + 991683097.

It is an arithmetic number, because the mean of its divisors is an integer number (991683097).

Almost surely, 2^1983366193 is an apocalyptic number.

It is an amenable number.

1983366193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1983366193 is an equidigital number, since it uses as much as digits as its factorization.

1983366193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 49.

The square root of 1983366193 is about 44534.9996407320. Note that the first 3 decimals coincide. The cubic root of 1983366193 is about 1256.4184409900.

The spelling of 1983366193 in words is "one billion, nine hundred eighty-three million, three hundred sixty-six thousand, one hundred ninety-three".