138514186 has 4 divisors (see below), whose sum is σ = 207771282. Its totient is φ = 69257092.

The previous prime is 138514183. The next prime is 138514193. The reversal of 138514186 is 681415831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 103408561 + 35105625 = 10169^2 + 5925^2 .

It is not an unprimeable number, because it can be changed into a prime (138514183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34628545 + ... + 34628548.

Almost surely, 2^138514186 is an apocalyptic number.

138514186 is a deficient number, since it is larger than the sum of its proper divisors (69257096).

138514186 is an equidigital number, since it uses as much as digits as its factorization.

138514186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69257095.

The product of its digits is 23040, while the sum is 37.

The square root of 138514186 is about 11769.2049858943. The cubic root of 138514186 is about 517.4059492863.

The spelling of 138514186 in words is "one hundred thirty-eight million, five hundred fourteen thousand, one hundred eighty-six".