1138522785 has 8 divisors (see below), whose sum is σ = 1821636480. Its totient is φ = 607212144.

The previous prime is 1138522753. The next prime is 1138522787. The reversal of 1138522785 is 5872258311.

1138522785 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1138522785 - 2⁵ = 1138522753 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1138522787) 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, 37950745 + ... + 37950774.

It is an arithmetic number, because the mean of its divisors is an integer number (227704560).

Almost surely, 2^1138522785 is an apocalyptic number.

1138522785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1138522785 is a deficient number, since it is larger than the sum of its proper divisors (683113695).

1138522785 is an equidigital number, since it uses as much as digits as its factorization.

1138522785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75901527.

The product of its digits is 134400, while the sum is 42.

The square root of 1138522785 is about 33742.0032748502. The cubic root of 1138522785 is about 1044.1925143358.

The spelling of 1138522785 in words is "one billion, one hundred thirty-eight million, five hundred twenty-two thousand, seven hundred eighty-five".