138895038 has 12 divisors (see below), whose sum is σ = 300939288. Its totient is φ = 46298340.

The previous prime is 138895037. The next prime is 138895039. The reversal of 138895038 is 830598831.

138895038 is a `hidden beast` number, since 138 + 8 + 9 + 503 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (138895037) and next prime (138895039).

It is a junction number, because it is equal to n+sod(n) for n = 138894984 and 138895002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138895037) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3858178 + ... + 3858213.

It is an arithmetic number, because the mean of its divisors is an integer number (25078274).

Almost surely, 2^138895038 is an apocalyptic number.

138895038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

138895038 is an abundant number, since it is smaller than the sum of its proper divisors (162044250).

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

138895038 is a wasteful number, since it uses less digits than its factorization.

138895038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7716399 (or 7716396 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 138895038 is about 11785.3739015782. The cubic root of 138895038 is about 517.8797269000.

The spelling of 138895038 in words is "one hundred thirty-eight million, eight hundred ninety-five thousand, thirty-eight".