1912885 has 8 divisors (see below), whose sum is σ = 2472120. Its totient is φ = 1412544.

The previous prime is 1912879. The next prime is 1912903. The reversal of 1912885 is 5882191.

It can be written as a sum of positive squares in 4 ways, for example, as 269361 + 1643524 = 519^2 + 1282^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1912885 - 2⁹ = 1912373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1912885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14650 + ... + 14779.

It is an arithmetic number, because the mean of its divisors is an integer number (309015).

2^1912885 is an apocalyptic number.

It is an amenable number.

1912885 is a deficient number, since it is larger than the sum of its proper divisors (559235).

1912885 is a wasteful number, since it uses less digits than its factorization.

1912885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29447.

The product of its digits is 5760, while the sum is 34.

The square root of 1912885 is about 1383.0708586331. The cubic root of 1912885 is about 124.1355827080.

The spelling of 1912885 in words is "one million, nine hundred twelve thousand, eight hundred eighty-five".