1900285 has 16 divisors (see below), whose sum is σ = 2439360. Its totient is φ = 1416960.

The previous prime is 1900273. The next prime is 1900291. The reversal of 1900285 is 5820091.

It is not a de Polignac number, because 1900285 - 2⁵ = 1900253 is a prime.

It is a super-2 number, since 2×1900285² = 7222166162450, which contains 22 as substring.

1900285 is a modest number, since divided by 285 gives 190 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7765 + ... + 8005.

It is an arithmetic number, because the mean of its divisors is an integer number (152460).

2^1900285 is an apocalyptic number.

It is an amenable number.

1900285 is a deficient number, since it is larger than the sum of its proper divisors (539075).

1900285 is a wasteful number, since it uses less digits than its factorization.

1900285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1900285 is about 1378.5082516982. The cubic root of 1900285 is about 123.8624254651.

The spelling of 1900285 in words is "one million, nine hundred thousand, two hundred eighty-five".