1438358111 has 2 divisors, whose sum is σ = 1438358112. Its totient is φ = 1438358110.

The previous prime is 1438358071. The next prime is 1438358137. The reversal of 1438358111 is 1118538341.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1438358111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1438358191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719179055 + 719179056.

It is an arithmetic number, because the mean of its divisors is an integer number (719179056).

Almost surely, 2^1438358111 is an apocalyptic number.

1438358111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438358111 is an equidigital number, since it uses as much as digits as its factorization.

1438358111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 35.

The square root of 1438358111 is about 37925.6919646827. The cubic root of 1438358111 is about 1128.8138834602.

The spelling of 1438358111 in words is "one billion, four hundred thirty-eight million, three hundred fifty-eight thousand, one hundred eleven".