18298786123 has 2 divisors, whose sum is σ = 18298786124. Its totient is φ = 18298786122.

The previous prime is 18298786117. The next prime is 18298786139. The reversal of 18298786123 is 32168789281.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18298786123 is a prime.

It is a super-2 number, since 2×18298786123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18298786153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9149393061 + 9149393062.

It is an arithmetic number, because the mean of its divisors is an integer number (9149393062).

Almost surely, 2^18298786123 is an apocalyptic number.

18298786123 is a deficient number, since it is larger than the sum of its proper divisors (1).

18298786123 is an equidigital number, since it uses as much as digits as its factorization.

18298786123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 55.

The spelling of 18298786123 in words is "eighteen billion, two hundred ninety-eight million, seven hundred eighty-six thousand, one hundred twenty-three".