1128706487 has 4 divisors (see below), whose sum is σ = 1128893136. Its totient is φ = 1128519840.

The previous prime is 1128706463. The next prime is 1128706547. The reversal of 1128706487 is 7846078211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7846078211 = 263 ⋅29832997.

It is a cyclic number.

It is not a de Polignac number, because 1128706487 - 2⁸ = 1128706231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128706987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83939 + ... + 96452.

It is an arithmetic number, because the mean of its divisors is an integer number (282223284).

Almost surely, 2^1128706487 is an apocalyptic number.

1128706487 is a deficient number, since it is larger than the sum of its proper divisors (186649).

1128706487 is an equidigital number, since it uses as much as digits as its factorization.

1128706487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186648.

The product of its (nonzero) digits is 150528, while the sum is 44.

The square root of 1128706487 is about 33596.2272733115. The cubic root of 1128706487 is about 1041.1828525726.

The spelling of 1128706487 in words is "one billion, one hundred twenty-eight million, seven hundred six thousand, four hundred eighty-seven".