1138026587 has 2 divisors, whose sum is σ = 1138026588. Its totient is φ = 1138026586.

The previous prime is 1138026581. The next prime is 1138026611. The reversal of 1138026587 is 7856208311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1138026587 - 2¹² = 1138022491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1138026581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569013293 + 569013294.

It is an arithmetic number, because the mean of its divisors is an integer number (569013294).

Almost surely, 2^1138026587 is an apocalyptic number.

1138026587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138026587 is an equidigital number, since it uses as much as digits as its factorization.

1138026587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 1138026587 is about 33734.6496498778. The cubic root of 1138026587 is about 1044.0407968257.

The spelling of 1138026587 in words is "one billion, one hundred thirty-eight million, twenty-six thousand, five hundred eighty-seven".