138853850 has 24 divisors (see below), whose sum is σ = 259624380. Its totient is φ = 55249920.

The previous prime is 138853823. The next prime is 138853853. The reversal of 138853850 is 58358831.

It can be written as a sum of positive squares in 6 ways, for example, as 20675209 + 118178641 = 4547^2 + 10871^2 .

It is a super-3 number, since 3×138853850³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138853798 and 138853807.

It is not an unprimeable number, because it can be changed into a prime (138853853) 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, 2456 + ... + 16844.

Almost surely, 2^138853850 is an apocalyptic number.

138853850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138853850 is a deficient number, since it is larger than the sum of its proper divisors (120770530).

138853850 is a wasteful number, since it uses less digits than its factorization.

138853850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14594 (or 14589 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 138853850 is about 11783.6263518494. The cubic root of 138853850 is about 517.8285310731.

The spelling of 138853850 in words is "one hundred thirty-eight million, eight hundred fifty-three thousand, eight hundred fifty".