1138732069 has 2 divisors, whose sum is σ = 1138732070. Its totient is φ = 1138732068.

The previous prime is 1138732061. The next prime is 1138732087. The reversal of 1138732069 is 9602378311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 587092900 + 551639169 = 24230^2 + 23487^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138732069 - 2³ = 1138732061 is a prime.

It is a super-2 number, since 2×1138732069² = 2593421449938041522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138732061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569366034 + 569366035.

It is an arithmetic number, because the mean of its divisors is an integer number (569366035).

Almost surely, 2^1138732069 is an apocalyptic number.

It is an amenable number.

1138732069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138732069 is an equidigital number, since it uses as much as digits as its factorization.

1138732069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 1138732069 is about 33745.1043708565. The cubic root of 1138732069 is about 1044.2564917986.

The spelling of 1138732069 in words is "one billion, one hundred thirty-eight million, seven hundred thirty-two thousand, sixty-nine".