138429263 has 12 divisors (see below), whose sum is σ = 161388432. Its totient is φ = 118389600.

The previous prime is 138429259. The next prime is 138429271. The reversal of 138429263 is 362924831.

It is not a de Polignac number, because 138429263 - 2² = 138429259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138429223) 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, 20963 + ... + 26763.

It is an arithmetic number, because the mean of its divisors is an integer number (13449036).

Almost surely, 2^138429263 is an apocalyptic number.

138429263 is a deficient number, since it is larger than the sum of its proper divisors (22959169).

138429263 is an equidigital number, since it uses as much as digits as its factorization.

138429263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6302 (or 6295 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 138429263 is about 11765.5965849590. The cubic root of 138429263 is about 517.3001871990.

The spelling of 138429263 in words is "one hundred thirty-eight million, four hundred twenty-nine thousand, two hundred sixty-three".