2542491648 has 144 divisors (see below), whose sum is σ = 7384759200. Its totient is φ = 842711040.

The previous prime is 2542491641. The next prime is 2542491671. The reversal of 2542491648 is 8461942452.

It is a happy number.

2542491648 is a `hidden beast` number, since 2 + 542 + 49 + 1 + 64 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542491641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4994818 + ... + 4995326.

It is an arithmetic number, because the mean of its divisors is an integer number (51283050).

Almost surely, 2^2542491648 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 2542491648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3692379600).

2542491648 is an abundant number, since it is smaller than the sum of its proper divisors (4842267552).

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

2542491648 is a wasteful number, since it uses less digits than its factorization.

2542491648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808 (or 785 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 2542491648 is about 50423.1261228417. The cubic root of 2542491648 is about 1364.8549892244.

The spelling of 2542491648 in words is "two billion, five hundred forty-two million, four hundred ninety-one thousand, six hundred forty-eight".