1138026138 has 16 divisors (see below), whose sum is σ = 2409937920. Its totient is φ = 357027776.

The previous prime is 1138026107. The next prime is 1138026191. The reversal of 1138026138 is 8316208311.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1138026099 and 1138026108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5578458 + ... + 5578661.

It is an arithmetic number, because the mean of its divisors is an integer number (150621120).

Almost surely, 2^1138026138 is an apocalyptic number.

1138026138 is an abundant number, since it is smaller than the sum of its proper divisors (1271911782).

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

1138026138 is a wasteful number, since it uses less digits than its factorization.

1138026138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11157141.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1138026138 is about 33734.6429949985. The cubic root of 1138026138 is about 1044.0406595195.

The spelling of 1138026138 in words is "one billion, one hundred thirty-eight million, twenty-six thousand, one hundred thirty-eight".