2139341568 has 216 divisors, whose sum is σ = 7134483888. Its totient is φ = 564092928.

The previous prime is 2139341507. The next prime is 2139341569. The reversal of 2139341568 is 8651439312.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (2139341569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 487030 + ... + 491402.

It is an arithmetic number, because the mean of its divisors is an integer number (33030018).

Almost surely, 2^2139341568 is an apocalyptic number.

2139341568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139341568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3567241944).

2139341568 is an abundant number, since it is smaller than the sum of its proper divisors (4995142320).

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

2139341568 is a wasteful number, since it uses less digits than its factorization.

2139341568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419 (or 4398 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 2139341568 is about 46253.0168529578. The cubic root of 2139341568 is about 1288.5265647868.

The spelling of 2139341568 in words is "two billion, one hundred thirty-nine million, three hundred forty-one thousand, five hundred sixty-eight".