1984895 has 16 divisors (see below), whose sum is σ = 2626560. Its totient is φ = 1428000.

The previous prime is 1984891. The next prime is 1984897. The reversal of 1984895 is 5984891.

It is not a de Polignac number, because 1984895 - 2² = 1984891 is a prime.

It is a super-3 number, since 3×1984895³ = 23460316559333152125, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8186 + ... + 8424.

It is an arithmetic number, because the mean of its divisors is an integer number (164160).

2^1984895 is an apocalyptic number.

1984895 is a deficient number, since it is larger than the sum of its proper divisors (641665).

1984895 is a wasteful number, since it uses less digits than its factorization.

1984895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406.

The product of its digits is 103680, while the sum is 44.

The square root of 1984895 is about 1408.8630167621. The cubic root of 1984895 is about 125.6741179842.

The spelling of 1984895 in words is "one million, nine hundred eighty-four thousand, eight hundred ninety-five".