138692958 has 16 divisors (see below), whose sum is σ = 283288320. Its totient is φ = 45247256.

The previous prime is 138692947. The next prime is 138692969. The reversal of 138692958 is 859296831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (138692947) and next prime (138692969).

It is a self number, because there is not a number n which added to its sum of digits gives 138692958.

It is a congruent number.

It is an unprimeable number.

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, 245628 + ... + 246191.

It is an arithmetic number, because the mean of its divisors is an integer number (17705520).

Almost surely, 2^138692958 is an apocalyptic number.

138692958 is an abundant number, since it is smaller than the sum of its proper divisors (144595362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138692958 is a wasteful number, since it uses less digits than its factorization.

138692958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491871.

The product of its digits is 933120, while the sum is 51.

The square root of 138692958 is about 11776.7974424289. The cubic root of 138692958 is about 517.6284485931.

The spelling of 138692958 in words is "one hundred thirty-eight million, six hundred ninety-two thousand, nine hundred fifty-eight".