1128237487 has 16 divisors (see below), whose sum is σ = 1289427552. Its totient is φ = 977955840.

The previous prime is 1128237449. The next prime is 1128237497. The reversal of 1128237487 is 7847328211.

It is a cyclic number.

It is not a de Polignac number, because 1128237487 - 2⁷ = 1128237359 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 (1128237437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95412 + ... + 106582.

It is an arithmetic number, because the mean of its divisors is an integer number (80589222).

Almost surely, 2^1128237487 is an apocalyptic number.

1128237487 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1128237487 is a deficient number, since it is larger than the sum of its proper divisors (161190065).

1128237487 is a wasteful number, since it uses less digits than its factorization.

1128237487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11658.

The product of its digits is 150528, while the sum is 43.

The square root of 1128237487 is about 33589.2465976836. The cubic root of 1128237487 is about 1041.0386218643.

The spelling of 1128237487 in words is "one billion, one hundred twenty-eight million, two hundred thirty-seven thousand, four hundred eighty-seven".