3784664893 has 2 divisors, whose sum is σ = 3784664894. Its totient is φ = 3784664892.

The previous prime is 3784664837. The next prime is 3784664911. The reversal of 3784664893 is 3984664873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2344690084 + 1439974809 = 48422^2 + 37947^2 .

It is a cyclic number.

It is not a de Polignac number, because 3784664893 - 2⁹ = 3784664381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3784664813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1892332446 + 1892332447.

It is an arithmetic number, because the mean of its divisors is an integer number (1892332447).

Almost surely, 2^3784664893 is an apocalyptic number.

It is an amenable number.

3784664893 is a deficient number, since it is larger than the sum of its proper divisors (1).

3784664893 is an equidigital number, since it uses as much as digits as its factorization.

3784664893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20901888, while the sum is 58.

The square root of 3784664893 is about 61519.6301435566. The cubic root of 3784664893 is about 1558.3887721406.

The spelling of 3784664893 in words is "three billion, seven hundred eighty-four million, six hundred sixty-four thousand, eight hundred ninety-three".