138673035 has 24 divisors (see below), whose sum is σ = 242502624. Its totient is φ = 73301760.

The previous prime is 138673033. The next prime is 138673037. The reversal of 138673035 is 530376831.

It is an interprime number because it is at equal distance from previous prime (138673033) and next prime (138673037).

It is not a de Polignac number, because 138673035 - 2¹ = 138673033 is a prime.

It is a super-2 number, since 2×138673035² = 38460421272222450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138673033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8551 + ... + 18720.

It is an arithmetic number, because the mean of its divisors is an integer number (10104276).

Almost surely, 2^138673035 is an apocalyptic number.

138673035 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138673035 is a deficient number, since it is larger than the sum of its proper divisors (103829589).

138673035 is a wasteful number, since it uses less digits than its factorization.

138673035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27395 (or 27392 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 138673035 is about 11775.9515539085. The cubic root of 138673035 is about 517.6036619335.

The spelling of 138673035 in words is "one hundred thirty-eight million, six hundred seventy-three thousand, thirty-five".