138065629 has 16 divisors (see below), whose sum is σ = 151820032. Its totient is φ = 124789248.

The previous prime is 138065621. The next prime is 138065659. The reversal of 138065629 is 926560831.

It is a cyclic number.

It is not a de Polignac number, because 138065629 - 2³ = 138065621 is a prime.

It is a super-2 number, since 2×138065629² = 38124235822331282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138065591 and 138065600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138065621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129352 + ... + 130414.

It is an arithmetic number, because the mean of its divisors is an integer number (9488752).

Almost surely, 2^138065629 is an apocalyptic number.

It is an amenable number.

138065629 is a deficient number, since it is larger than the sum of its proper divisors (13754403).

138065629 is a wasteful number, since it uses less digits than its factorization.

138065629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 138065629 is about 11750.1331481818. The cubic root of 138065629 is about 516.8468319764.

The spelling of 138065629 in words is "one hundred thirty-eight million, sixty-five thousand, six hundred twenty-nine".