1320193639 has 2 divisors, whose sum is σ = 1320193640. Its totient is φ = 1320193638.

The previous prime is 1320193607. The next prime is 1320193643. The reversal of 1320193639 is 9363910231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320193639 - 2⁵ = 1320193607 is a prime.

It is a super-2 number, since 2×1320193639² = 3485822488912124642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320193598 and 1320193607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320193139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660096819 + 660096820.

It is an arithmetic number, because the mean of its divisors is an integer number (660096820).

Almost surely, 2^1320193639 is an apocalyptic number.

1320193639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320193639 is an equidigital number, since it uses as much as digits as its factorization.

1320193639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 1320193639 is about 36334.4690204770. The cubic root of 1320193639 is about 1097.0149478868.

The spelling of 1320193639 in words is "one billion, three hundred twenty million, one hundred ninety-three thousand, six hundred thirty-nine".