138434283 has 12 divisors (see below), whose sum is σ = 215342400. Its totient is φ = 85190256.

The previous prime is 138434273. The next prime is 138434287. The reversal of 138434283 is 382434831.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-138434283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138434287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 591483 + ... + 591716.

It is an arithmetic number, because the mean of its divisors is an integer number (17945200).

Almost surely, 2^138434283 is an apocalyptic number.

138434283 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

138434283 is a deficient number, since it is larger than the sum of its proper divisors (76908117).

138434283 is a wasteful number, since it uses less digits than its factorization.

138434283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183218 (or 1183215 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 138434283 is about 11765.8099168736. The cubic root of 138434283 is about 517.3064402496.

The spelling of 138434283 in words is "one hundred thirty-eight million, four hundred thirty-four thousand, two hundred eighty-three".