2591851968 has 168 divisors, whose sum is σ = 8003414016. Its totient is φ = 799603200.

The previous prime is 2591851967. The next prime is 2591852009. The reversal of 2591851968 is 8691581952.

2591851968 is a `hidden beast` number, since 2 + 59 + 18 + 519 + 68 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591851967) 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, 407533 + ... + 413843.

Almost surely, 2^2591851968 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 2591851968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4001707008).

2591851968 is an abundant number, since it is smaller than the sum of its proper divisors (5411562048).

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

2591851968 is a wasteful number, since it uses less digits than its factorization.

2591851968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383 (or 6370 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 54.

The square root of 2591851968 is about 50910.2344131315. The cubic root of 2591851968 is about 1373.6309402052.

The spelling of 2591851968 in words is "two billion, five hundred ninety-one million, eight hundred fifty-one thousand, nine hundred sixty-eight".