1864166 has 8 divisors (see below), whose sum is σ = 2943480. Its totient is φ = 883008.

The previous prime is 1864153. The next prime is 1864189. The reversal of 1864166 is 6614681.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1864166² = 6950229751112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24491 + ... + 24566.

It is an arithmetic number, because the mean of its divisors is an integer number (367935).

2^1864166 is an apocalyptic number.

1864166 is a deficient number, since it is larger than the sum of its proper divisors (1079314).

1864166 is a wasteful number, since it uses less digits than its factorization.

1864166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49078.

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

The square root of 1864166 is about 1365.3446451354. The cubic root of 1864166 is about 123.0726431004.

The spelling of 1864166 in words is "one million, eight hundred sixty-four thousand, one hundred sixty-six".