138162069 has 12 divisors (see below), whose sum is σ = 199735692. Its totient is φ = 92030400.

The previous prime is 138162067. The next prime is 138162083. The reversal of 138162069 is 960261831.

138162069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 69105969 + 69056100 = 8313^2 + 8310^2 .

It is not a de Polignac number, because 138162069 - 2¹ = 138162067 is a prime.

It is a super-2 number, since 2×138162069² = 38177514620721522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138162067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6079 + ... + 17699.

It is an arithmetic number, because the mean of its divisors is an integer number (16644641).

Almost surely, 2^138162069 is an apocalyptic number.

It is an amenable number.

138162069 is a deficient number, since it is larger than the sum of its proper divisors (61573623).

138162069 is a wasteful number, since it uses less digits than its factorization.

138162069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12948 (or 12945 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 138162069 is about 11754.2362150843. The cubic root of 138162069 is about 516.9671445835.

The spelling of 138162069 in words is "one hundred thirty-eight million, one hundred sixty-two thousand, sixty-nine".