2139627968 has 56 divisors (see below), whose sum is σ = 4362785280. Its totient is φ = 1040506880.

The previous prime is 2139627947. The next prime is 2139627989. The reversal of 2139627968 is 8697269312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2139627947) and next prime (2139627989).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003928 + ... + 1006056.

It is an arithmetic number, because the mean of its divisors is an integer number (77906880).

Almost surely, 2^2139627968 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 2139627968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2181392640).

2139627968 is an abundant number, since it is smaller than the sum of its proper divisors (2223157312).

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

2139627968 is a wasteful number, since it uses less digits than its factorization.

2139627968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565 (or 2555 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 53.

The square root of 2139627968 is about 46256.1127636121. The cubic root of 2139627968 is about 1288.5840618452.

The spelling of 2139627968 in words is "two billion, one hundred thirty-nine million, six hundred twenty-seven thousand, nine hundred sixty-eight".