1919812 has 6 divisors (see below), whose sum is σ = 3359678. Its totient is φ = 959904.

The previous prime is 1919789. The next prime is 1919839. The reversal of 1919812 is 2189191.

It can be written as a sum of positive squares in only one way, i.e., 1915456 + 4356 = 1384^2 + 66^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239973 + ... + 239980.

2^1919812 is an apocalyptic number.

It is an amenable number.

1919812 is a deficient number, since it is larger than the sum of its proper divisors (1439866).

1919812 is a wasteful number, since it uses less digits than its factorization.

1919812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479957 (or 479955 counting only the distinct ones).

The product of its digits is 1296, while the sum is 31.

The square root of 1919812 is about 1385.5728057378. The cubic root of 1919812 is about 124.2852434411.

The spelling of 1919812 in words is "one million, nine hundred nineteen thousand, eight hundred twelve".