18859029403 has 2 divisors, whose sum is σ = 18859029404. Its totient is φ = 18859029402.

The previous prime is 18859029401. The next prime is 18859029461. The reversal of 18859029403 is 30492095881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18859029403 - 2¹ = 18859029401 is a prime.

Together with 18859029401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18859029401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9429514701 + 9429514702.

It is an arithmetic number, because the mean of its divisors is an integer number (9429514702).

Almost surely, 2^18859029403 is an apocalyptic number.

18859029403 is a deficient number, since it is larger than the sum of its proper divisors (1).

18859029403 is an equidigital number, since it uses as much as digits as its factorization.

18859029403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 18859029403 in words is "eighteen billion, eight hundred fifty-nine million, twenty-nine thousand, four hundred three".