1671611201 has 16 divisors (see below), whose sum is σ = 1818507600. Its totient is φ = 1527413760.

The previous prime is 1671611191. The next prime is 1671611231. The reversal of 1671611201 is 1021161761.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1057810576 + 613800625 = 32524^2 + 24775^2 .

It is a cyclic number.

It is not a de Polignac number, because 1671611201 - 2¹⁴ = 1671594817 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1671611231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546725 + ... + 549773.

It is an arithmetic number, because the mean of its divisors is an integer number (113656725).

Almost surely, 2^1671611201 is an apocalyptic number.

It is an amenable number.

1671611201 is a deficient number, since it is larger than the sum of its proper divisors (146896399).

1671611201 is a wasteful number, since it uses less digits than its factorization.

1671611201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3476.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1671611201 is about 40885.3421289342. The cubic root of 1671611201 is about 1186.8024226693.

Adding to 1671611201 its reverse (1021161761), we get a palindrome (2692772962).

The spelling of 1671611201 in words is "one billion, six hundred seventy-one million, six hundred eleven thousand, two hundred one".