1238067091 has 4 divisors (see below), whose sum is σ = 1264408992. Its totient is φ = 1211725192.

The previous prime is 1238067073. The next prime is 1238067097. The reversal of 1238067091 is 1907608321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1238067091 - 2¹¹ = 1238065043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1238067091.

It is not an unprimeable number, because it can be changed into a prime (1238067097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13170880 + ... + 13170973.

It is an arithmetic number, because the mean of its divisors is an integer number (316102248).

Almost surely, 2^1238067091 is an apocalyptic number.

1238067091 is a deficient number, since it is larger than the sum of its proper divisors (26341901).

1238067091 is an equidigital number, since it uses as much as digits as its factorization.

1238067091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26341900.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1238067091 is about 35186.1775559665. The cubic root of 1238067091 is about 1073.7785560087.

The spelling of 1238067091 in words is "one billion, two hundred thirty-eight million, sixty-seven thousand, ninety-one".