1671823897 has 2 divisors, whose sum is σ = 1671823898. Its totient is φ = 1671823896.

The previous prime is 1671823883. The next prime is 1671823919. The reversal of 1671823897 is 7983281761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1503965961 + 167857936 = 38781^2 + 12956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1671823897 - 2¹¹ = 1671821849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1671823847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835911948 + 835911949.

It is an arithmetic number, because the mean of its divisors is an integer number (835911949).

Almost surely, 2^1671823897 is an apocalyptic number.

It is an amenable number.

1671823897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1671823897 is an equidigital number, since it uses as much as digits as its factorization.

1671823897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 52.

The square root of 1671823897 is about 40887.9431739969. The cubic root of 1671823897 is about 1186.8527568264.

The spelling of 1671823897 in words is "one billion, six hundred seventy-one million, eight hundred twenty-three thousand, eight hundred ninety-seven".