1618989103 has 2 divisors, whose sum is σ = 1618989104. Its totient is φ = 1618989102.

The previous prime is 1618989091. The next prime is 1618989149. The reversal of 1618989103 is 3019898161.

It is a happy number.

It is an a-pointer prime, because the next prime (1618989149) can be obtained adding 1618989103 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1618989103 - 2²¹ = 1616891951 is a prime.

It is a super-2 number, since 2×1618989103² = 5242251431265489218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1618989193) 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, 809494551 + 809494552.

It is an arithmetic number, because the mean of its divisors is an integer number (809494552).

Almost surely, 2^1618989103 is an apocalyptic number.

1618989103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618989103 is an equidigital number, since it uses as much as digits as its factorization.

1618989103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 1618989103 is about 40236.6636663628. The cubic root of 1618989103 is about 1174.2159496705.

The spelling of 1618989103 in words is "one billion, six hundred eighteen million, nine hundred eighty-nine thousand, one hundred three".