1850166685 has 16 divisors (see below), whose sum is σ = 2282524416. Its totient is φ = 1438665408.

The previous prime is 1850166683. The next prime is 1850166701. The reversal of 1850166685 is 5866610581.

It is a cyclic number.

It is not a de Polignac number, because 1850166685 - 2¹ = 1850166683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1850166683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199522 + ... + 208588.

It is an arithmetic number, because the mean of its divisors is an integer number (142657776).

Almost surely, 2^1850166685 is an apocalyptic number.

It is an amenable number.

1850166685 is a deficient number, since it is larger than the sum of its proper divisors (432357731).

1850166685 is a wasteful number, since it uses less digits than its factorization.

1850166685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 1850166685 is about 43013.5639653354. The cubic root of 1850166685 is about 1227.6378940357.

The spelling of 1850166685 in words is "one billion, eight hundred fifty million, one hundred sixty-six thousand, six hundred eighty-five".