138236170 has 8 divisors (see below), whose sum is σ = 248825124. Its totient is φ = 55294464.

The previous prime is 138236167. The next prime is 138236173. The reversal of 138236170 is 71632831.

It is an interprime number because it is at equal distance from previous prime (138236167) and next prime (138236173).

It can be written as a sum of positive squares in 2 ways, for example, as 129254161 + 8982009 = 11369^2 + 2997^2 .

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

It is not an unprimeable number, because it can be changed into a prime (138236173) 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 3 ways as a sum of consecutive naturals, for example, 6911799 + ... + 6911818.

Almost surely, 2^138236170 is an apocalyptic number.

138236170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138236170 is a deficient number, since it is larger than the sum of its proper divisors (110588954).

138236170 is a wasteful number, since it uses less digits than its factorization.

138236170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13823624.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 138236170 is about 11757.3878901736. The cubic root of 138236170 is about 517.0595503987.

The spelling of 138236170 in words is "one hundred thirty-eight million, two hundred thirty-six thousand, one hundred seventy".