1916005 has 16 divisors (see below), whose sum is σ = 2830464. Its totient is φ = 1212480.

The previous prime is 1915997. The next prime is 1916021. The reversal of 1916005 is 5006191.

It is not a de Polignac number, because 1916005 - 2³ = 1915997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1651 + ... + 2560.

It is an arithmetic number, because the mean of its divisors is an integer number (176904).

2^1916005 is an apocalyptic number.

It is an amenable number.

1916005 is a deficient number, since it is larger than the sum of its proper divisors (914459).

1916005 is a wasteful number, since it uses less digits than its factorization.

1916005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 1916005 is about 1384.1983239406. The cubic root of 1916005 is about 124.2030362558.

The spelling of 1916005 in words is "one million, nine hundred sixteen thousand, five".