1618732858903 has 2 divisors, whose sum is σ = 1618732858904. Its totient is φ = 1618732858902.

The previous prime is 1618732858871. The next prime is 1618732858943. The reversal of 1618732858903 is 3098582378161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1618732858903 - 2⁵ = 1618732858871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1618732858943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809366429451 + 809366429452.

It is an arithmetic number, because the mean of its divisors is an integer number (809366429452).

Almost surely, 2^{1618732858903} is an apocalyptic number.

1618732858903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618732858903 is an equidigital number, since it uses as much as digits as its factorization.

1618732858903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 1618732858903 in words is "one trillion, six hundred eighteen billion, seven hundred thirty-two million, eight hundred fifty-eight thousand, nine hundred three".