1919894 has 4 divisors (see below), whose sum is σ = 2879844. Its totient is φ = 959946.

The previous prime is 1919891. The next prime is 1919917. The reversal of 1919894 is 4989191.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479972 + ... + 479975.

It is an arithmetic number, because the mean of its divisors is an integer number (719961).

2^1919894 is an apocalyptic number.

1919894 is a deficient number, since it is larger than the sum of its proper divisors (959950).

1919894 is an equidigital number, since it uses as much as digits as its factorization.

1919894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959949.

The product of its digits is 23328, while the sum is 41.

The square root of 1919894 is about 1385.6023960718. The cubic root of 1919894 is about 124.2870129277.

The spelling of 1919894 in words is "one million, nine hundred nineteen thousand, eight hundred ninety-four".