4182821897 has 2 divisors, whose sum is σ = 4182821898. Its totient is φ = 4182821896.

The previous prime is 4182821893. The next prime is 4182821921. The reversal of 4182821897 is 7981282814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2634871561 + 1547950336 = 51331^2 + 39344^2 .

It is a cyclic number.

It is not a de Polignac number, because 4182821897 - 2² = 4182821893 is a prime.

It is not a weakly prime, because it can be changed into another prime (4182821891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2091410948 + 2091410949.

It is an arithmetic number, because the mean of its divisors is an integer number (2091410949).

Almost surely, 2^4182821897 is an apocalyptic number.

It is an amenable number.

4182821897 is a deficient number, since it is larger than the sum of its proper divisors (1).

4182821897 is an equidigital number, since it uses as much as digits as its factorization.

4182821897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 50.

The square root of 4182821897 is about 64674.7392495710. The cubic root of 4182821897 is about 1611.2259860686.

The spelling of 4182821897 in words is "four billion, one hundred eighty-two million, eight hundred twenty-one thousand, eight hundred ninety-seven".