1611442201 has 2 divisors, whose sum is σ = 1611442202. Its totient is φ = 1611442200.

The previous prime is 1611442187. The next prime is 1611442211. The reversal of 1611442201 is 1022441161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1230255625 + 381186576 = 35075^2 + 19524^2 .

It is a cyclic number.

It is not a de Polignac number, because 1611442201 - 2¹⁵ = 1611409433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1611442211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805721100 + 805721101.

It is an arithmetic number, because the mean of its divisors is an integer number (805721101).

Almost surely, 2^1611442201 is an apocalyptic number.

It is an amenable number.

1611442201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1611442201 is an equidigital number, since it uses as much as digits as its factorization.

1611442201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1611442201 is about 40142.7727119092. The cubic root of 1611442201 is about 1172.3885752062.

Adding to 1611442201 its reverse (1022441161), we get a palindrome (2633883362).

The spelling of 1611442201 in words is "one billion, six hundred eleven million, four hundred forty-two thousand, two hundred one".