1887489 has 16 divisors (see below), whose sum is σ = 2851200. Its totient is φ = 1233648.

The previous prime is 1887463. The next prime is 1887499. The reversal of 1887489 is 9847881.

It is not a de Polignac number, because 1887489 - 2¹² = 1883393 is a prime.

It is a super-2 number, since 2×1887489² = 7125229450242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1887409) 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, 772 + ... + 2090.

It is an arithmetic number, because the mean of its divisors is an integer number (178200).

2^1887489 is an apocalyptic number.

It is an amenable number.

1887489 is a deficient number, since it is larger than the sum of its proper divisors (963711).

1887489 is a wasteful number, since it uses less digits than its factorization.

1887489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1375 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 1887489 is about 1373.8591630877. The cubic root of 1887489 is about 123.5837805091.

The spelling of 1887489 in words is "one million, eight hundred eighty-seven thousand, four hundred eighty-nine".