1135558987 has 2 divisors, whose sum is σ = 1135558988. Its totient is φ = 1135558986.

The previous prime is 1135558937. The next prime is 1135558999. The reversal of 1135558987 is 7898555311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1135558987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1135558937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567779493 + 567779494.

It is an arithmetic number, because the mean of its divisors is an integer number (567779494).

Almost surely, 2^1135558987 is an apocalyptic number.

1135558987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135558987 is an equidigital number, since it uses as much as digits as its factorization.

1135558987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512000, while the sum is 52.

The square root of 1135558987 is about 33698.0561308809. The cubic root of 1135558987 is about 1043.2856476917.

The spelling of 1135558987 in words is "one billion, one hundred thirty-five million, five hundred fifty-eight thousand, nine hundred eighty-seven".