3827128897 has 2 divisors, whose sum is σ = 3827128898. Its totient is φ = 3827128896.

The previous prime is 3827128891. The next prime is 3827128919. The reversal of 3827128897 is 7988217283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3466736641 + 360392256 = 58879^2 + 18984^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3827128897 is a prime.

It is not a weakly prime, because it can be changed into another prime (3827128891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1913564448 + 1913564449.

It is an arithmetic number, because the mean of its divisors is an integer number (1913564449).

Almost surely, 2^3827128897 is an apocalyptic number.

It is an amenable number.

3827128897 is a deficient number, since it is larger than the sum of its proper divisors (1).

3827128897 is an equidigital number, since it uses as much as digits as its factorization.

3827128897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 55.

The square root of 3827128897 is about 61863.7931022662. The cubic root of 3827128897 is about 1564.1954916022.

The spelling of 3827128897 in words is "three billion, eight hundred twenty-seven million, one hundred twenty-eight thousand, eight hundred ninety-seven".