138148663 has 12 divisors (see below), whose sum is σ = 144934920. Its totient is φ = 131512080.

The previous prime is 138148607. The next prime is 138148667. The reversal of 138148663 is 366841831.

It is a happy number.

It is not a de Polignac number, because 138148663 - 2¹⁷ = 138017591 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 (138148667) 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, 654628 + ... + 654838.

It is an arithmetic number, because the mean of its divisors is an integer number (12077910).

Almost surely, 2^138148663 is an apocalyptic number.

138148663 is a deficient number, since it is larger than the sum of its proper divisors (6786257).

138148663 is an equidigital number, since it uses as much as digits as its factorization.

138148663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558 (or 347 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 138148663 is about 11753.6659387614. The cubic root of 138148663 is about 516.9504234343.

The spelling of 138148663 in words is "one hundred thirty-eight million, one hundred forty-eight thousand, six hundred sixty-three".