18830736461 has 2 divisors, whose sum is σ = 18830736462. Its totient is φ = 18830736460.

The previous prime is 18830736427. The next prime is 18830736473. The reversal of 18830736461 is 16463703881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13314852100 + 5515884361 = 115390^2 + 74269^2 .

It is an emirp because it is prime and its reverse (16463703881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18830736461 - 2³⁰ = 17756994637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18830736401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9415368230 + 9415368231.

It is an arithmetic number, because the mean of its divisors is an integer number (9415368231).

Almost surely, 2^18830736461 is an apocalyptic number.

It is an amenable number.

18830736461 is a deficient number, since it is larger than the sum of its proper divisors (1).

18830736461 is an equidigital number, since it uses as much as digits as its factorization.

18830736461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 18830736461 in words is "eighteen billion, eight hundred thirty million, seven hundred thirty-six thousand, four hundred sixty-one".