1902985 has 8 divisors (see below), whose sum is σ = 2609856. Its totient is φ = 1304880.

The previous prime is 1902977. The next prime is 1902991. The reversal of 1902985 is 5892091.

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

It is not a de Polignac number, because 1902985 - 2³ = 1902977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1902985.

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, 27151 + ... + 27220.

It is an arithmetic number, because the mean of its divisors is an integer number (326232).

2^1902985 is an apocalyptic number.

It is an amenable number.

1902985 is a deficient number, since it is larger than the sum of its proper divisors (706871).

1902985 is an equidigital number, since it uses as much as digits as its factorization.

1902985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54383.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1902985 is about 1379.4872235726. The cubic root of 1902985 is about 123.9210605792.

The spelling of 1902985 in words is "one million, nine hundred two thousand, nine hundred eighty-five".