1982397133 has 2 divisors, whose sum is σ = 1982397134. Its totient is φ = 1982397132.

The previous prime is 1982397113. The next prime is 1982397143. The reversal of 1982397133 is 3317932891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1950282244 + 32114889 = 44162^2 + 5667^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982397133 - 2⁵ = 1982397101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1982397113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991198566 + 991198567.

It is an arithmetic number, because the mean of its divisors is an integer number (991198567).

Almost surely, 2^1982397133 is an apocalyptic number.

It is an amenable number.

1982397133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982397133 is an equidigital number, since it uses as much as digits as its factorization.

1982397133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The square root of 1982397133 is about 44524.1185538804. The cubic root of 1982397133 is about 1256.2137816576.

The spelling of 1982397133 in words is "one billion, nine hundred eighty-two million, three hundred ninety-seven thousand, one hundred thirty-three".