138535745 has 16 divisors (see below), whose sum is σ = 180641280. Its totient is φ = 101606400.

The previous prime is 138535729. The next prime is 138535751. The reversal of 138535745 is 547535831.

It is not a de Polignac number, because 138535745 - 2⁴ = 138535729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20576 + ... + 26465.

It is an arithmetic number, because the mean of its divisors is an integer number (11290080).

Almost surely, 2^138535745 is an apocalyptic number.

It is an amenable number.

138535745 is a deficient number, since it is larger than the sum of its proper divisors (42105535).

138535745 is a wasteful number, since it uses less digits than its factorization.

138535745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47096.

The product of its digits is 252000, while the sum is 41.

The square root of 138535745 is about 11770.1208574934. The cubic root of 138535745 is about 517.4327917263.

The spelling of 138535745 in words is "one hundred thirty-eight million, five hundred thirty-five thousand, seven hundred forty-five".