2542492645 has 64 divisors (see below), whose sum is σ = 3902976000. Its totient is φ = 1576169280.

The previous prime is 2542492643. The next prime is 2542492661. The reversal of 2542492645 is 5462942452.

It is not a de Polignac number, because 2542492645 - 2¹ = 2542492643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542492643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5791336 + ... + 5791774.

It is an arithmetic number, because the mean of its divisors is an integer number (60984000).

Almost surely, 2^2542492645 is an apocalyptic number.

It is an amenable number.

2542492645 is a deficient number, since it is larger than the sum of its proper divisors (1360483355).

2542492645 is a wasteful number, since it uses less digits than its factorization.

2542492645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 769 counting only the distinct ones).

The product of its digits is 691200, while the sum is 43.

The square root of 2542492645 is about 50423.1360091774. The cubic root of 2542492645 is about 1364.8551676269.

The spelling of 2542492645 in words is "two billion, five hundred forty-two million, four hundred ninety-two thousand, six hundred forty-five".