3728563693 has 2 divisors, whose sum is σ = 3728563694. Its totient is φ = 3728563692.

The previous prime is 3728563691. The next prime is 3728563801. The reversal of 3728563693 is 3963658273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3652751844 + 75811849 = 60438^2 + 8707^2 .

It is a cyclic number.

It is not a de Polignac number, because 3728563693 - 2¹ = 3728563691 is a prime.

Together with 3728563691, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3728563693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3728563691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1864281846 + 1864281847.

It is an arithmetic number, because the mean of its divisors is an integer number (1864281847).

Almost surely, 2^3728563693 is an apocalyptic number.

It is an amenable number.

3728563693 is a deficient number, since it is larger than the sum of its proper divisors (1).

3728563693 is an equidigital number, since it uses as much as digits as its factorization.

3728563693 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 3728563693 is about 61061.9660099476. The cubic root of 3728563693 is about 1550.6502568917.

The spelling of 3728563693 in words is "three billion, seven hundred twenty-eight million, five hundred sixty-three thousand, six hundred ninety-three".