1865894946 has 32 divisors (see below), whose sum is σ = 3783241728. Its totient is φ = 613415760.

The previous prime is 1865894923. The next prime is 1865894951. The reversal of 1865894946 is 6494985681.

It is a self number, because there is not a number n which added to its sum of digits gives 1865894946.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319311 + ... + 325101.

It is an arithmetic number, because the mean of its divisors is an integer number (118226304).

Almost surely, 2^1865894946 is an apocalyptic number.

1865894946 is an abundant number, since it is smaller than the sum of its proper divisors (1917346782).

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

1865894946 is a wasteful number, since it uses less digits than its factorization.

1865894946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6526.

The product of its digits is 14929920, while the sum is 60.

The square root of 1865894946 is about 43196.0061348269. The cubic root of 1865894946 is about 1231.1067980671.

The spelling of 1865894946 in words is "one billion, eight hundred sixty-five million, eight hundred ninety-four thousand, nine hundred forty-six".