138862263 has 8 divisors (see below), whose sum is σ = 185617648. Its totient is φ = 92340864.

The previous prime is 138862259. The next prime is 138862271. The reversal of 138862263 is 362268831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138862263 - 2² = 138862259 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 (138862363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57106 + ... + 59487.

It is an arithmetic number, because the mean of its divisors is an integer number (23202206).

Almost surely, 2^138862263 is an apocalyptic number.

138862263 is a deficient number, since it is larger than the sum of its proper divisors (46755385).

138862263 is a wasteful number, since it uses less digits than its factorization.

138862263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116993.

The product of its digits is 82944, while the sum is 39.

The square root of 138862263 is about 11783.9833248355. The cubic root of 138862263 is about 517.8389890797.

The spelling of 138862263 in words is "one hundred thirty-eight million, eight hundred sixty-two thousand, two hundred sixty-three".