1138745266 has 8 divisors (see below), whose sum is σ = 1733612400. Its totient is φ = 560874468.

The previous prime is 1138745261. The next prime is 1138745287. The reversal of 1138745266 is 6625478311.

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

It is not an unprimeable number, because it can be changed into a prime (1138745261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4248916 + ... + 4249183.

It is an arithmetic number, because the mean of its divisors is an integer number (216701550).

Almost surely, 2^1138745266 is an apocalyptic number.

1138745266 is a deficient number, since it is larger than the sum of its proper divisors (594867134).

1138745266 is an equidigital number, since it uses as much as digits as its factorization.

1138745266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8498168.

The product of its digits is 241920, while the sum is 43.

The square root of 1138745266 is about 33745.2999097652. The cubic root of 1138745266 is about 1044.2605258174.

The spelling of 1138745266 in words is "one billion, one hundred thirty-eight million, seven hundred forty-five thousand, two hundred sixty-six".