1138282257 has 8 divisors (see below), whose sum is σ = 1734525376. Its totient is φ = 650446992.

The previous prime is 1138282217. The next prime is 1138282261. The reversal of 1138282257 is 7522828311.

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

It is not a de Polignac number, because 1138282257 - 2⁷ = 1138282129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138282217) 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, 27101938 + ... + 27101979.

It is an arithmetic number, because the mean of its divisors is an integer number (216815672).

Almost surely, 2^1138282257 is an apocalyptic number.

It is an amenable number.

1138282257 is a deficient number, since it is larger than the sum of its proper divisors (596243119).

1138282257 is an equidigital number, since it uses as much as digits as its factorization.

1138282257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54203927.

The product of its digits is 53760, while the sum is 39.

The square root of 1138282257 is about 33738.4388642984. The cubic root of 1138282257 is about 1044.1189759961.

It can be divided in two parts, 11382 and 82257, that added together give a palindrome (93639).

The spelling of 1138282257 in words is "one billion, one hundred thirty-eight million, two hundred eighty-two thousand, two hundred fifty-seven".