138752651 has 8 divisors (see below), whose sum is σ = 142554384. Its totient is φ = 134970880.

The previous prime is 138752597. The next prime is 138752671. The reversal of 138752651 is 156257831.

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 138752651 - 2¹⁴ = 138736267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138752671) 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 7 ways as a sum of consecutive naturals, for example, 9680 + ... + 19266.

It is an arithmetic number, because the mean of its divisors is an integer number (17819298).

Almost surely, 2^138752651 is an apocalyptic number.

138752651 is a deficient number, since it is larger than the sum of its proper divisors (3801733).

138752651 is an equidigital number, since it uses as much as digits as its factorization.

138752651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9981.

The product of its digits is 50400, while the sum is 38.

The square root of 138752651 is about 11779.3315175353. The cubic root of 138752651 is about 517.7026998110.

The spelling of 138752651 in words is "one hundred thirty-eight million, seven hundred fifty-two thousand, six hundred fifty-one".