138244051 has 8 divisors (see below), whose sum is σ = 159683184. Its totient is φ = 118283520.

The previous prime is 138244031. The next prime is 138244091. The reversal of 138244051 is 150442831.

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 138244051 - 2¹¹ = 138242003 is a prime.

It is a super-2 number, since 2×138244051² = 38222835273781202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138244031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369450 + ... + 369823.

It is an arithmetic number, because the mean of its divisors is an integer number (19960398).

Almost surely, 2^138244051 is an apocalyptic number.

138244051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

138244051 is a deficient number, since it is larger than the sum of its proper divisors (21439133).

138244051 is a wasteful number, since it uses less digits than its factorization.

138244051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739301.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 138244051 is about 11757.7230363706. The cubic root of 138244051 is about 517.0693762614.

Adding to 138244051 its reverse (150442831), we get a palindrome (288686882).

The spelling of 138244051 in words is "one hundred thirty-eight million, two hundred forty-four thousand, fifty-one".