1671565201 has 2 divisors, whose sum is σ = 1671565202. Its totient is φ = 1671565200.

The previous prime is 1671565153. The next prime is 1671565219. The reversal of 1671565201 is 1025651761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1382054976 + 289510225 = 37176^2 + 17015^2 .

It is a cyclic number.

It is not a de Polignac number, because 1671565201 - 2⁹ = 1671564689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1671565501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835782600 + 835782601.

It is an arithmetic number, because the mean of its divisors is an integer number (835782601).

Almost surely, 2^1671565201 is an apocalyptic number.

It is an amenable number.

1671565201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1671565201 is an equidigital number, since it uses as much as digits as its factorization.

1671565201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 1671565201 is about 40884.7795762677. The cubic root of 1671565201 is about 1186.7915362837.

The spelling of 1671565201 in words is "one billion, six hundred seventy-one million, five hundred sixty-five thousand, two hundred one".