138499116 has 48 divisors (see below), whose sum is σ = 371288064. Its totient is φ = 39361536.

The previous prime is 138499111. The next prime is 138499121. The reversal of 138499116 is 611994831.

It is an interprime number because it is at equal distance from previous prime (138499111) and next prime (138499121).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (138499111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11941 + ... + 20483.

It is an arithmetic number, because the mean of its divisors is an integer number (7735168).

Almost surely, 2^138499116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138499116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185644032).

138499116 is an abundant number, since it is smaller than the sum of its proper divisors (232788948).

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

138499116 is a wasteful number, since it uses less digits than its factorization.

138499116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8750 (or 8748 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The square root of 138499116 is about 11768.5647383188. The cubic root of 138499116 is about 517.3871844443.

The spelling of 138499116 in words is "one hundred thirty-eight million, four hundred ninety-nine thousand, one hundred sixteen".