1863996 has 12 divisors (see below), whose sum is σ = 4349352. Its totient is φ = 621328.

The previous prime is 1863971. The next prime is 1863997. The reversal of 1863996 is 6993681.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1863997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77655 + ... + 77678.

It is an arithmetic number, because the mean of its divisors is an integer number (362446).

2^1863996 is an apocalyptic number.

It is an amenable number.

1863996 is an abundant number, since it is smaller than the sum of its proper divisors (2485356).

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

1863996 is a wasteful number, since it uses less digits than its factorization.

1863996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155340 (or 155338 counting only the distinct ones).

The product of its digits is 69984, while the sum is 42.

The square root of 1863996 is about 1365.2823883725. The cubic root of 1863996 is about 123.0689018410.

The spelling of 1863996 in words is "one million, eight hundred sixty-three thousand, nine hundred ninety-six".