1918363 has 2 divisors, whose sum is σ = 1918364. Its totient is φ = 1918362.

The previous prime is 1918351. The next prime is 1918391. The reversal of 1918363 is 3638191.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1918363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1918303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959181 + 959182.

It is an arithmetic number, because the mean of its divisors is an integer number (959182).

2^1918363 is an apocalyptic number.

1918363 is a deficient number, since it is larger than the sum of its proper divisors (1).

1918363 is an equidigital number, since it uses as much as digits as its factorization.

1918363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 1918363 is about 1385.0498185986. The cubic root of 1918363 is about 124.2539670027.

The spelling of 1918363 in words is "one million, nine hundred eighteen thousand, three hundred sixty-three".