1850866 has 16 divisors (see below), whose sum is σ = 2980800. Its totient is φ = 859248.

The previous prime is 1850843. The next prime is 1850887. The reversal of 1850866 is 6680581.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1555 + ... + 2473.

It is an arithmetic number, because the mean of its divisors is an integer number (186300).

2^1850866 is an apocalyptic number.

1850866 is a deficient number, since it is larger than the sum of its proper divisors (1129934).

1850866 is a wasteful number, since it uses less digits than its factorization.

1850866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 1850866 is about 1360.4653615583. The cubic root of 1850866 is about 122.7792546309.

The spelling of 1850866 in words is "one million, eight hundred fifty thousand, eight hundred sixty-six".