1918916 has 24 divisors (see below), whose sum is σ = 3507840. Its totient is φ = 917792.

The previous prime is 1918897. The next prime is 1918919. The reversal of 1918916 is 6198191.

It is not an unprimeable number, because it can be changed into a prime (1918919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11006 + ... + 11178.

It is an arithmetic number, because the mean of its divisors is an integer number (146160).

2^1918916 is an apocalyptic number.

It is an amenable number.

1918916 is a deficient number, since it is larger than the sum of its proper divisors (1588924).

1918916 is a wasteful number, since it uses less digits than its factorization.

1918916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 281 counting only the distinct ones).

The product of its digits is 3888, while the sum is 35.

The square root of 1918916 is about 1385.2494360223. The cubic root of 1918916 is about 124.2659052790.

Subtracting 1918916 from its reverse (6198191), we obtain a triangular number (4279275 = T₂₉₂₅).

The spelling of 1918916 in words is "one million, nine hundred eighteen thousand, nine hundred sixteen".