1915984 has 20 divisors (see below), whose sum is σ = 4242784. Its totient is φ = 821088.

The previous prime is 1915981. The next prime is 1915993. The reversal of 1915984 is 4895191.

1915984 is nontrivially palindromic in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915981) 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, 8442 + ... + 8665.

2^1915984 is an apocalyptic number.

1915984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1915984 is an abundant number, since it is smaller than the sum of its proper divisors (2326800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1915984 is a wasteful number, since it uses less digits than its factorization.

1915984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17122 (or 17116 counting only the distinct ones).

The product of its digits is 12960, while the sum is 37.

The square root of 1915984 is about 1384.1907383016. The cubic root of 1915984 is about 124.2025824864.

The spelling of 1915984 in words is "one million, nine hundred fifteen thousand, nine hundred eighty-four".