1438118611 has 2 divisors, whose sum is σ = 1438118612. Its totient is φ = 1438118610.

The previous prime is 1438118609. The next prime is 1438118659. The reversal of 1438118611 is 1168118341.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1438118611 - 2¹ = 1438118609 is a prime.

Together with 1438118609, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1438118711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719059305 + 719059306.

It is an arithmetic number, because the mean of its divisors is an integer number (719059306).

Almost surely, 2^1438118611 is an apocalyptic number.

1438118611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438118611 is an equidigital number, since it uses as much as digits as its factorization.

1438118611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 34.

The square root of 1438118611 is about 37922.5343430525. The cubic root of 1438118611 is about 1128.7512273132.

The spelling of 1438118611 in words is "one billion, four hundred thirty-eight million, one hundred eighteen thousand, six hundred eleven".