1618963 has 2 divisors, whose sum is σ = 1618964.
Its totient is φ = 1618962.
The previous prime is 1618957. The next prime is 1618973. The reversal of 1618963 is 3698161.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 1618963 - 25 = 1618931 is a prime.
It is an alternating number because its digits alternate between odd and even.
1618963 is a lucky number.
It is a nialpdrome in base 6.
It is not a weakly prime, because it can be changed into another prime (1618943) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809481 + 809482.
It is an arithmetic number, because the mean of its divisors is an integer number (809482).
21618963 is an apocalyptic number.
1618963 is a deficient number, since it is larger than the sum of its proper divisors (1).
1618963 is an equidigital number, since it uses as much as digits as its factorization.
1618963 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 7776, while the sum is 34.
The square root of 1618963 is about 1272.3847688494.
The cubic root of 1618963 is about 117.4209638999.
The spelling of 1618963 in words is "one million, six hundred eighteen thousand, nine hundred sixty-three".