1138033878 has 16 divisors (see below), whose sum is σ = 2276412336. Its totient is φ = 379287200.

The previous prime is 1138033847. The next prime is 1138033931. The reversal of 1138033878 is 8783308311.

It is a super-2 number, since 2×1138033878² = 2590242214951437768, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 52600 + ... + 71012.

It is an arithmetic number, because the mean of its divisors is an integer number (142275771).

Almost surely, 2^1138033878 is an apocalyptic number.

1138033878 is an abundant number, since it is smaller than the sum of its proper divisors (1138378458).

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

1138033878 is a wasteful number, since it uses less digits than its factorization.

1138033878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28719.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 1138033878 is about 33734.7577136697. The cubic root of 1138033878 is about 1044.0430264412.

The spelling of 1138033878 in words is "one billion, one hundred thirty-eight million, thirty-three thousand, eight hundred seventy-eight".