138229641 has 12 divisors (see below), whose sum is σ = 217816560. Its totient is φ = 83775480.

The previous prime is 138229633. The next prime is 138229657. The reversal of 138229641 is 146922831.

138229641 is a `hidden beast` number, since 1 + 3 + 8 + 2 + 2 + 9 + 641 = 666.

138229641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138229641 - 2³ = 138229633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138229596 and 138229605.

It is not an unprimeable number, because it can be changed into a prime (138221641) 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, 698031 + ... + 698228.

It is an arithmetic number, because the mean of its divisors is an integer number (18151380).

Almost surely, 2^138229641 is an apocalyptic number.

138229641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

138229641 is a deficient number, since it is larger than the sum of its proper divisors (79586919).

138229641 is a wasteful number, since it uses less digits than its factorization.

138229641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396276 (or 1396273 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 138229641 is about 11757.1102316853. The cubic root of 138229641 is about 517.0514098979.

The spelling of 138229641 in words is "one hundred thirty-eight million, two hundred twenty-nine thousand, six hundred forty-one".