1861896 has 32 divisors (see below), whose sum is σ = 4858560. Its totient is φ = 593472.

The previous prime is 1861889. The next prime is 1861897. The reversal of 1861896 is 6981681.

It is not an unprimeable number, because it can be changed into a prime (1861897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135 + ... + 2238.

It is an arithmetic number, because the mean of its divisors is an integer number (151830).

2^1861896 is an apocalyptic number.

It is an amenable number.

1861896 is an abundant number, since it is smaller than the sum of its proper divisors (2996664).

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

1861896 is a wasteful number, since it uses less digits than its factorization.

1861896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405 (or 3401 counting only the distinct ones).

The product of its digits is 20736, while the sum is 39.

The square root of 1861896 is about 1364.5130999738. The cubic root of 1861896 is about 123.0226675125.

The spelling of 1861896 in words is "one million, eight hundred sixty-one thousand, eight hundred ninety-six".