2497543693 has 2 divisors, whose sum is σ = 2497543694. Its totient is φ = 2497543692.

The previous prime is 2497543687. The next prime is 2497543709. The reversal of 2497543693 is 3963457942.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1537659369 + 959884324 = 39213^2 + 30982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2497543693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2497543693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2497543093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248771846 + 1248771847.

It is an arithmetic number, because the mean of its divisors is an integer number (1248771847).

Almost surely, 2^2497543693 is an apocalyptic number.

It is an amenable number.

2497543693 is a deficient number, since it is larger than the sum of its proper divisors (1).

2497543693 is an equidigital number, since it uses as much as digits as its factorization.

2497543693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 52.

The square root of 2497543693 is about 49975.4308935901. The cubic root of 2497543693 is about 1356.7641664426.

The spelling of 2497543693 in words is "two billion, four hundred ninety-seven million, five hundred forty-three thousand, six hundred ninety-three".