1115560639 has 2 divisors, whose sum is σ = 1115560640. Its totient is φ = 1115560638.

The previous prime is 1115560601. The next prime is 1115560643. The reversal of 1115560639 is 9360655111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1115560639 - 2¹⁵ = 1115527871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1115560598 and 1115560607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115563639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557780319 + 557780320.

It is an arithmetic number, because the mean of its divisors is an integer number (557780320).

Almost surely, 2^1115560639 is an apocalyptic number.

1115560639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115560639 is an equidigital number, since it uses as much as digits as its factorization.

1115560639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 1115560639 is about 33400.0095658669. The cubic root of 1115560639 is about 1037.1248989780.

The spelling of 1115560639 in words is "one billion, one hundred fifteen million, five hundred sixty thousand, six hundred thirty-nine".