18507141437 has 2 divisors, whose sum is σ = 18507141438. Its totient is φ = 18507141436.

The previous prime is 18507141403. The next prime is 18507141487. The reversal of 18507141437 is 73414170581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10066309561 + 8440831876 = 100331^2 + 91874^2 .

It is a cyclic number.

It is not a de Polignac number, because 18507141437 - 2¹⁰ = 18507140413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18507141394 and 18507141403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18507141487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9253570718 + 9253570719.

It is an arithmetic number, because the mean of its divisors is an integer number (9253570719).

Almost surely, 2^18507141437 is an apocalyptic number.

It is an amenable number.

18507141437 is a deficient number, since it is larger than the sum of its proper divisors (1).

18507141437 is an equidigital number, since it uses as much as digits as its factorization.

18507141437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 18507141437 in words is "eighteen billion, five hundred seven million, one hundred forty-one thousand, four hundred thirty-seven".