1138438097 has 2 divisors, whose sum is σ = 1138438098. Its totient is φ = 1138438096.

The previous prime is 1138438073. The next prime is 1138438121. The reversal of 1138438097 is 7908348311.

It is a balanced prime because it is at equal distance from previous prime (1138438073) and next prime (1138438121).

It can be written as a sum of positive squares in only one way, i.e., 954130321 + 184307776 = 30889^2 + 13576^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138438097 - 2¹⁰ = 1138437073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1138438597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569219048 + 569219049.

It is an arithmetic number, because the mean of its divisors is an integer number (569219049).

Almost surely, 2^1138438097 is an apocalyptic number.

It is an amenable number.

1138438097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138438097 is an equidigital number, since it uses as much as digits as its factorization.

1138438097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1138438097 is about 33740.7483171313. The cubic root of 1138438097 is about 1044.1666232515.

The spelling of 1138438097 in words is "one billion, one hundred thirty-eight million, four hundred thirty-eight thousand, ninety-seven".