3138212250 has 72 divisors (see below), whose sum is σ = 8492917212. Its totient is φ = 836148000.

The previous prime is 3138212227. The next prime is 3138212279. The reversal of 3138212250 is 522128313.

3138212250 is a `hidden beast` number, since 31 + 382 + 1 + 2 + 250 = 666.

3138212250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1220035041 + 1918177209 = 34929^2 + 43797^2 .

It is a super-2 number, since 2×3138212250² = 19696752252100125000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2656660 + ... + 2657840.

Almost surely, 2^3138212250 is an apocalyptic number.

3138212250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3138212250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4246458606).

3138212250 is an abundant number, since it is smaller than the sum of its proper divisors (5354704962).

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

3138212250 is an equidigital number, since it uses as much as digits as its factorization.

3138212250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385 (or 1191 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 3138212250 is about 56019.7487498828. The cubic root of 3138212250 is about 1464.0663909917.

The spelling of 3138212250 in words is "three billion, one hundred thirty-eight million, two hundred twelve thousand, two hundred fifty".