18617441131 has 2 divisors, whose sum is σ = 18617441132. Its totient is φ = 18617441130.

The previous prime is 18617441119. The next prime is 18617441231. The reversal of 18617441131 is 13114471681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18617441131 - 2¹¹ = 18617439083 is a prime.

It is a super-2 number, since 2×18617441131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18617441231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9308720565 + 9308720566.

It is an arithmetic number, because the mean of its divisors is an integer number (9308720566).

Almost surely, 2^18617441131 is an apocalyptic number.

18617441131 is a deficient number, since it is larger than the sum of its proper divisors (1).

18617441131 is an equidigital number, since it uses as much as digits as its factorization.

18617441131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 37.

The spelling of 18617441131 in words is "eighteen billion, six hundred seventeen million, four hundred forty-one thousand, one hundred thirty-one".