1861466 has 16 divisors (see below), whose sum is σ = 3015144. Its totient is φ = 858624.

The previous prime is 1861417. The next prime is 1861469. The reversal of 1861466 is 6641681.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1809025 + 52441 = 1345^2 + 229^2 .

It is not an unprimeable number, because it can be changed into a prime (1861469) 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, 1286 + ... + 2318.

2^1861466 is an apocalyptic number.

1861466 is a deficient number, since it is larger than the sum of its proper divisors (1153678).

1861466 is a wasteful number, since it uses less digits than its factorization.

1861466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105.

The product of its digits is 6912, while the sum is 32.

The square root of 1861466 is about 1364.3555255138. The cubic root of 1861466 is about 123.0131961958.

The spelling of 1861466 in words is "one million, eight hundred sixty-one thousand, four hundred sixty-six".