3785543897 has 2 divisors, whose sum is σ = 3785543898. Its totient is φ = 3785543896.

The previous prime is 3785543873. The next prime is 3785543911. The reversal of 3785543897 is 7983455873.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2550654016 + 1234889881 = 50504^2 + 35141^2 .

It is a cyclic number.

It is not a de Polignac number, because 3785543897 - 2²⁴ = 3768766681 is a prime.

It is a super-2 number, since 2×3785543897² = 28660685192227893218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3785543837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1892771948 + 1892771949.

It is an arithmetic number, because the mean of its divisors is an integer number (1892771949).

Almost surely, 2^3785543897 is an apocalyptic number.

It is an amenable number.

3785543897 is a deficient number, since it is larger than the sum of its proper divisors (1).

3785543897 is an equidigital number, since it uses as much as digits as its factorization.

3785543897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25401600, while the sum is 59.

The square root of 3785543897 is about 61526.7738224588. The cubic root of 3785543897 is about 1558.5094102039.

The spelling of 3785543897 in words is "three billion, seven hundred eighty-five million, five hundred forty-three thousand, eight hundred ninety-seven".