1128234138 has 16 divisors (see below), whose sum is σ = 2389201920. Its totient is φ = 353955776.

The previous prime is 1128234137. The next prime is 1128234209. The reversal of 1128234138 is 8314328211.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1128234099 and 1128234108.

It is not an unprimeable number, because it can be changed into a prime (1128234137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5530458 + ... + 5530661.

It is an arithmetic number, because the mean of its divisors is an integer number (149325120).

Almost surely, 2^1128234138 is an apocalyptic number.

1128234138 is an abundant number, since it is smaller than the sum of its proper divisors (1260967782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1128234138 is a wasteful number, since it uses less digits than its factorization.

1128234138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11061141.

The product of its digits is 9216, while the sum is 33.

The square root of 1128234138 is about 33589.1967453823. The cubic root of 1128234138 is about 1041.0375918088.

The spelling of 1128234138 in words is "one billion, one hundred twenty-eight million, two hundred thirty-four thousand, one hundred thirty-eight".