2139068250 has 336 divisors, whose sum is σ = 6667203816. Its totient is φ = 513216000.

The previous prime is 2139068249. The next prime is 2139068251. The reversal of 2139068250 is 528609312.

It is an interprime number because it is at equal distance from previous prime (2139068249) and next prime (2139068251).

It can be written as a sum of positive squares in 4 ways, for example, as 578739249 + 1560329001 = 24057^2 + 39501^2 .

It is a super-2 number, since 2×2139068250² = 9151225956316125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2139068251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 22052202 + ... + 22052298.

Almost surely, 2^2139068250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139068250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3333601908).

2139068250 is an abundant number, since it is smaller than the sum of its proper divisors (4528135566).

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

2139068250 is an equidigital number, since it uses as much as digits as its factorization.

2139068250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2139068250 is about 46250.0621621204. The cubic root of 2139068250 is about 1288.4716892575.

The spelling of 2139068250 in words is "two billion, one hundred thirty-nine million, sixty-eight thousand, two hundred fifty".