138241616 has 40 divisors (see below), whose sum is σ = 274461600. Its totient is φ = 67432320.

The previous prime is 138241613. The next prime is 138241639. The reversal of 138241616 is 616142831.

It is a super-2 number, since 2×138241616² = 38221488788582912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138241613) 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, 135155 + ... + 136173.

It is an arithmetic number, because the mean of its divisors is an integer number (6861540).

Almost surely, 2^138241616 is an apocalyptic number.

138241616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138241616 is a deficient number, since it is larger than the sum of its proper divisors (136219984).

138241616 is a wasteful number, since it uses less digits than its factorization.

138241616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1221 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 138241616 is about 11757.6194869540. The cubic root of 138241616 is about 517.0663403952.

The spelling of 138241616 in words is "one hundred thirty-eight million, two hundred forty-one thousand, six hundred sixteen".