138190850 has 96 divisors (see below), whose sum is σ = 305980416. Its totient is φ = 45460800.

The previous prime is 138190849. The next prime is 138190853. The reversal of 138190850 is 58091831.

138190850 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138190850² = 38193422047445000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 138190850.

It is not an unprimeable number, because it can be changed into a prime (138190853) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1664909 + ... + 1664991.

It is an arithmetic number, because the mean of its divisors is an integer number (3187296).

Almost surely, 2^138190850 is an apocalyptic number.

138190850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138190850 is an abundant number, since it is smaller than the sum of its proper divisors (167789566).

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

138190850 is a wasteful number, since it uses less digits than its factorization.

138190850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 138190850 is about 11755.4604333476. The cubic root of 138190850 is about 517.0030391395.

The spelling of 138190850 in words is "one hundred thirty-eight million, one hundred ninety thousand, eight hundred fifty".