138007465 has 8 divisors (see below), whose sum is σ = 167075208. Its totient is φ = 109428480.

The previous prime is 138007459. The next prime is 138007481. The reversal of 138007465 is 564700831.

138007465 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 4 ways, for example, as 16941456 + 121066009 = 4116^2 + 11003^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138007465 - 2²³ = 129618857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138007465.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121566 + ... + 122695.

It is an arithmetic number, because the mean of its divisors is an integer number (20884401).

Almost surely, 2^138007465 is an apocalyptic number.

It is an amenable number.

138007465 is a deficient number, since it is larger than the sum of its proper divisors (29067743).

138007465 is a wasteful number, since it uses less digits than its factorization.

138007465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244379.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 138007465 is about 11747.6578516741. The cubic root of 138007465 is about 516.7742430639.

The spelling of 138007465 in words is "one hundred thirty-eight million, seven thousand, four hundred sixty-five".