138370945 has 8 divisors (see below), whose sum is σ = 167353344. Its totient is φ = 109824624.

The previous prime is 138370943. The next prime is 138370957. The reversal of 138370945 is 549073831.

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

It is a cyclic number.

It is not a de Polignac number, because 138370945 - 2¹ = 138370943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138370898 and 138370907.

It is not an unprimeable number, because it can be changed into a prime (138370943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108319 + ... + 109588.

It is an arithmetic number, because the mean of its divisors is an integer number (20919168).

Almost surely, 2^138370945 is an apocalyptic number.

It is an amenable number.

138370945 is a deficient number, since it is larger than the sum of its proper divisors (28982399).

138370945 is a wasteful number, since it uses less digits than its factorization.

138370945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218039.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 138370945 is about 11763.1179965178. The cubic root of 138370945 is about 517.2275336066.

The spelling of 138370945 in words is "one hundred thirty-eight million, three hundred seventy thousand, nine hundred forty-five".