1138640033 has 2 divisors, whose sum is σ = 1138640034. Its totient is φ = 1138640032.

The previous prime is 1138639981. The next prime is 1138640039. The reversal of 1138640033 is 3300468311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1130506129 + 8133904 = 33623^2 + 2852^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138640033 - 2¹⁰ = 1138639009 is a prime.

It is a super-2 number, since 2×1138640033² = 2593002249500482178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1138639978 and 1138640005.

It is not a weakly prime, because it can be changed into another prime (1138640039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569320016 + 569320017.

It is an arithmetic number, because the mean of its divisors is an integer number (569320017).

Almost surely, 2^1138640033 is an apocalyptic number.

It is an amenable number.

1138640033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138640033 is an equidigital number, since it uses as much as digits as its factorization.

1138640033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1138640033 is about 33743.7406491930. The cubic root of 1138640033 is about 1044.2283576476.

The spelling of 1138640033 in words is "one billion, one hundred thirty-eight million, six hundred forty thousand, thirty-three".