1860080861 has 2 divisors, whose sum is σ = 1860080862. Its totient is φ = 1860080860.

The previous prime is 1860080801. The next prime is 1860080881. The reversal of 1860080861 is 1680800681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1724823961 + 135256900 = 41531^2 + 11630^2 .

It is a cyclic number.

It is not a de Polignac number, because 1860080861 - 2⁶ = 1860080797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1860080801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 930040430 + 930040431.

It is an arithmetic number, because the mean of its divisors is an integer number (930040431).

Almost surely, 2^1860080861 is an apocalyptic number.

It is an amenable number.

1860080861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1860080861 is an equidigital number, since it uses as much as digits as its factorization.

1860080861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 1860080861 is about 43128.6547552784. The cubic root of 1860080861 is about 1229.8267676362.

The spelling of 1860080861 in words is "one billion, eight hundred sixty million, eighty thousand, eight hundred sixty-one".