1181860201 has 2 divisors, whose sum is σ = 1181860202. Its totient is φ = 1181860200.

The previous prime is 1181860193. The next prime is 1181860223. The reversal of 1181860201 is 1020681811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1092368601 + 89491600 = 33051^2 + 9460^2 .

It is an emirp because it is prime and its reverse (1020681811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1181860201 - 2³ = 1181860193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1181860201.

It is not a weakly prime, because it can be changed into another prime (1181860241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590930100 + 590930101.

It is an arithmetic number, because the mean of its divisors is an integer number (590930101).

Almost surely, 2^1181860201 is an apocalyptic number.

It is an amenable number.

1181860201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1181860201 is an equidigital number, since it uses as much as digits as its factorization.

1181860201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 28.

The square root of 1181860201 is about 34378.1936843692. The cubic root of 1181860201 is about 1057.2768004332.

The spelling of 1181860201 in words is "one billion, one hundred eighty-one million, eight hundred sixty thousand, two hundred one".