1138344433 has 2 divisors, whose sum is σ = 1138344434. Its totient is φ = 1138344432.

The previous prime is 1138344421. The next prime is 1138344439. The reversal of 1138344433 is 3344438311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1118701809 + 19642624 = 33447^2 + 4432^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138344433 - 2⁵ = 1138344401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1138344439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569172216 + 569172217.

It is an arithmetic number, because the mean of its divisors is an integer number (569172217).

Almost surely, 2^1138344433 is an apocalyptic number.

It is an amenable number.

1138344433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138344433 is an equidigital number, since it uses as much as digits as its factorization.

1138344433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 34.

The square root of 1138344433 is about 33739.3602932836. The cubic root of 1138344433 is about 1044.1379865005.

The spelling of 1138344433 in words is "one billion, one hundred thirty-eight million, three hundred forty-four thousand, four hundred thirty-three".