18260009461 has 2 divisors, whose sum is σ = 18260009462. Its totient is φ = 18260009460.

The previous prime is 18260009393. The next prime is 18260009479. The reversal of 18260009461 is 16490006281.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12256704100 + 6003305361 = 110710^2 + 77481^2 .

It is a cyclic number.

It is not a de Polignac number, because 18260009461 - 2⁷ = 18260009333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18260009461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18260009561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9130004730 + 9130004731.

It is an arithmetic number, because the mean of its divisors is an integer number (9130004731).

Almost surely, 2^18260009461 is an apocalyptic number.

It is an amenable number.

18260009461 is a deficient number, since it is larger than the sum of its proper divisors (1).

18260009461 is an equidigital number, since it uses as much as digits as its factorization.

18260009461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 18260009461 in words is "eighteen billion, two hundred sixty million, nine thousand, four hundred sixty-one".