1138886718 has 32 divisors (see below), whose sum is σ = 2331141120. Its totient is φ = 370833120.

The previous prime is 1138886717. The next prime is 1138886719. The reversal of 1138886718 is 8176888311.

It is an interprime number because it is at equal distance from previous prime (1138886717) and next prime (1138886719).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138886717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34171 + ... + 58697.

It is an arithmetic number, because the mean of its divisors is an integer number (72848160).

Almost surely, 2^1138886718 is an apocalyptic number.

1138886718 is an abundant number, since it is smaller than the sum of its proper divisors (1192254402).

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

1138886718 is a wasteful number, since it uses less digits than its factorization.

1138886718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24712.

The product of its digits is 516096, while the sum is 51.

The square root of 1138886718 is about 33747.3957217442. The cubic root of 1138886718 is about 1044.3037624769.

The spelling of 1138886718 in words is "one billion, one hundred thirty-eight million, eight hundred eighty-six thousand, seven hundred eighteen".