2563387693 has 2 divisors, whose sum is σ = 2563387694. Its totient is φ = 2563387692.

The previous prime is 2563387667. The next prime is 2563387741. The reversal of 2563387693 is 3967833652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1482096004 + 1081291689 = 38498^2 + 32883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2563387693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2563387693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2563387643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281693846 + 1281693847.

It is an arithmetic number, because the mean of its divisors is an integer number (1281693847).

Almost surely, 2^2563387693 is an apocalyptic number.

It is an amenable number.

2563387693 is a deficient number, since it is larger than the sum of its proper divisors (1).

2563387693 is an equidigital number, since it uses as much as digits as its factorization.

2563387693 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 2563387693 is about 50629.9090755652. The cubic root of 2563387693 is about 1368.5839156904.

It can be divided in two parts, 25633876 and 93, that added together give a square (25633969 = 5063²).

The spelling of 2563387693 in words is "two billion, five hundred sixty-three million, three hundred eighty-seven thousand, six hundred ninety-three".