138730569 has 8 divisors (see below), whose sum is σ = 185570112. Its totient is φ = 92189040.

The previous prime is 138730567. The next prime is 138730573. The reversal of 138730569 is 965037831.

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

It is not a de Polignac number, because 138730569 - 2¹ = 138730567 is a prime.

It is a super-2 number, since 2×138730569² = 38492341550127522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138730569.

It is not an unprimeable number, because it can be changed into a prime (138730567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73414 + ... + 75279.

It is an arithmetic number, because the mean of its divisors is an integer number (23196264).

Almost surely, 2^138730569 is an apocalyptic number.

It is an amenable number.

138730569 is a deficient number, since it is larger than the sum of its proper divisors (46839543).

138730569 is a wasteful number, since it uses less digits than its factorization.

138730569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149007.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 138730569 is about 11778.3941604957. The cubic root of 138730569 is about 517.6752348282.

The spelling of 138730569 in words is "one hundred thirty-eight million, seven hundred thirty thousand, five hundred sixty-nine".