138006737 has 16 divisors (see below), whose sum is σ = 159382080. Its totient is φ = 118305600.

The previous prime is 138006733. The next prime is 138006751. The reversal of 138006737 is 737600831.

It is a cyclic number.

It is not a de Polignac number, because 138006737 - 2² = 138006733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138006697 and 138006706.

It is not an unprimeable number, because it can be changed into a prime (138006733) 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, 8687 + ... + 18747.

It is an arithmetic number, because the mean of its divisors is an integer number (9961380).

Almost surely, 2^138006737 is an apocalyptic number.

It is an amenable number.

138006737 is a deficient number, since it is larger than the sum of its proper divisors (21375343).

138006737 is a wasteful number, since it uses less digits than its factorization.

138006737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10144.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 138006737 is about 11747.6268667336. The cubic root of 138006737 is about 516.7733343877.

The spelling of 138006737 in words is "one hundred thirty-eight million, six thousand, seven hundred thirty-seven".