138180651 has 8 divisors (see below), whose sum is σ = 210561024. Its totient is φ = 78960360.

The previous prime is 138180631. The next prime is 138180659. The reversal of 138180651 is 156081831.

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

It is not a de Polignac number, because 138180651 - 2⁶ = 138180587 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (138180659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3289995 + ... + 3290036.

It is an arithmetic number, because the mean of its divisors is an integer number (26320128).

Almost surely, 2^138180651 is an apocalyptic number.

138180651 is a deficient number, since it is larger than the sum of its proper divisors (72380373).

138180651 is an equidigital number, since it uses as much as digits as its factorization.

138180651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6580041.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 138180651 is about 11755.0266269371. The cubic root of 138180651 is about 516.9903199092.

It can be divided in two parts, 138180 and 651, that added together give a palindrome (138831).

The spelling of 138180651 in words is "one hundred thirty-eight million, one hundred eighty thousand, six hundred fifty-one".