1896987 has 4 divisors (see below), whose sum is σ = 2529320. Its totient is φ = 1264656.

The previous prime is 1896959. The next prime is 1896989. The reversal of 1896987 is 7896981.

It is a happy number.

1896987 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1896987 - 2¹⁴ = 1880603 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1896989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316162 + ... + 316167.

It is an arithmetic number, because the mean of its divisors is an integer number (632330).

2^1896987 is an apocalyptic number.

1896987 is a deficient number, since it is larger than the sum of its proper divisors (632333).

1896987 is an equidigital number, since it uses as much as digits as its factorization.

1896987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632332.

The product of its digits is 217728, while the sum is 48.

The square root of 1896987 is about 1377.3115116051. The cubic root of 1896987 is about 123.7907283551.

The spelling of 1896987 in words is "one million, eight hundred ninety-six thousand, nine hundred eighty-seven".