1939382513 has 2 divisors, whose sum is σ = 1939382514. Its totient is φ = 1939382512.

The previous prime is 1939382449. The next prime is 1939382539. The reversal of 1939382513 is 3152839391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1912050529 + 27331984 = 43727^2 + 5228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1939382513 - 2⁶ = 1939382449 is a prime.

It is a super-2 number, since 2×1939382513² = 7522409063460390338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1939382113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969691256 + 969691257.

It is an arithmetic number, because the mean of its divisors is an integer number (969691257).

Almost surely, 2^1939382513 is an apocalyptic number.

It is an amenable number.

1939382513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1939382513 is an equidigital number, since it uses as much as digits as its factorization.

1939382513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 44.

The square root of 1939382513 is about 44038.4208731421. The cubic root of 1939382513 is about 1247.0613663998.

The spelling of 1939382513 in words is "one billion, nine hundred thirty-nine million, three hundred eighty-two thousand, five hundred thirteen".