138510148 has 24 divisors (see below), whose sum is σ = 286574400. Its totient is φ = 57314208.

The previous prime is 138510143. The next prime is 138510161. The reversal of 138510148 is 841015831.

It is a super-2 number, since 2×138510148² = 38370122197963808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138510143) 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, 84478 + ... + 86101.

It is an arithmetic number, because the mean of its divisors is an integer number (11940600).

Almost surely, 2^138510148 is an apocalyptic number.

It is an amenable number.

138510148 is an abundant number, since it is smaller than the sum of its proper divisors (148064252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138510148 is a wasteful number, since it uses less digits than its factorization.

138510148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170619 (or 170617 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 138510148 is about 11769.0334352486. The cubic root of 138510148 is about 517.4009213884.

Adding to 138510148 its reverse (841015831), we get a palindrome (979525979).

The spelling of 138510148 in words is "one hundred thirty-eight million, five hundred ten thousand, one hundred forty-eight".