138743832238 has 16 divisors (see below), whose sum is σ = 227135591424. Its totient is φ = 63037536760.

The previous prime is 138743832223. The next prime is 138743832247. The reversal of 138743832238 is 832238347831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1341070 + ... + 1440817.

It is an arithmetic number, because the mean of its divisors is an integer number (14195974464).

Almost surely, 2^138743832238 is an apocalyptic number.

138743832238 is a deficient number, since it is larger than the sum of its proper divisors (88391759186).

138743832238 is a wasteful number, since it uses less digits than its factorization.

138743832238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784167.

The product of its digits is 4644864, while the sum is 52.

The spelling of 138743832238 in words is "one hundred thirty-eight billion, seven hundred forty-three million, eight hundred thirty-two thousand, two hundred thirty-eight".