138695267 has 8 divisors (see below), whose sum is σ = 144886560. Its totient is φ = 132517440.

The previous prime is 138695257. The next prime is 138695279. The reversal of 138695267 is 762596831.

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 138695267 - 2²² = 134500963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138695257) 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, 21767 + ... + 27407.

It is an arithmetic number, because the mean of its divisors is an integer number (18110820).

Almost surely, 2^138695267 is an apocalyptic number.

138695267 is a deficient number, since it is larger than the sum of its proper divisors (6191293).

138695267 is a wasteful number, since it uses less digits than its factorization.

138695267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6733.

The product of its digits is 544320, while the sum is 47.

The square root of 138695267 is about 11776.8954737656. The cubic root of 138695267 is about 517.6313211193.

The spelling of 138695267 in words is "one hundred thirty-eight million, six hundred ninety-five thousand, two hundred sixty-seven".