2493978543 has 48 divisors (see below), whose sum is σ = 4256668416. Its totient is φ = 1377492480.

The previous prime is 2493978541. The next prime is 2493978593. The reversal of 2493978543 is 3458793942.

2493978543 is a `hidden beast` number, since 2 + 4 + 9 + 3 + 97 + 8 + 543 = 666.

It is not a de Polignac number, because 2493978543 - 2¹ = 2493978541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2493978543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2493978541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 258028 + ... + 267518.

It is an arithmetic number, because the mean of its divisors is an integer number (88680592).

Almost surely, 2^2493978543 is an apocalyptic number.

2493978543 is a deficient number, since it is larger than the sum of its proper divisors (1762689873).

2493978543 is a wasteful number, since it uses less digits than its factorization.

2493978543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9644 (or 9641 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The square root of 2493978543 is about 49939.7491283246. The cubic root of 2493978543 is about 1356.1182823570.

The spelling of 2493978543 in words is "two billion, four hundred ninety-three million, nine hundred seventy-eight thousand, five hundred forty-three".