18260880461 has 2 divisors, whose sum is σ = 18260880462. Its totient is φ = 18260880460.

The previous prime is 18260880409. The next prime is 18260880479. The reversal of 18260880461 is 16408806281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12233687236 + 6027193225 = 110606^2 + 77635^2 .

It is a cyclic number.

It is not a de Polignac number, because 18260880461 - 2¹⁴ = 18260864077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18260880401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9130440230 + 9130440231.

It is an arithmetic number, because the mean of its divisors is an integer number (9130440231).

Almost surely, 2^18260880461 is an apocalyptic number.

It is an amenable number.

18260880461 is a deficient number, since it is larger than the sum of its proper divisors (1).

18260880461 is an equidigital number, since it uses as much as digits as its factorization.

18260880461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147456, while the sum is 44.

The spelling of 18260880461 in words is "eighteen billion, two hundred sixty million, eight hundred eighty thousand, four hundred sixty-one".