1850161 has 8 divisors (see below), whose sum is σ = 2005344. Its totient is φ = 1700160.

The previous prime is 1850159. The next prime is 1850179. The reversal of 1850161 is 1610581.

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

It is a cyclic number.

It is not a de Polignac number, because 1850161 - 2¹ = 1850159 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1850131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535 + ... + 1996.

It is an arithmetic number, because the mean of its divisors is an integer number (250668).

2^1850161 is an apocalyptic number.

It is an amenable number.

1850161 is a deficient number, since it is larger than the sum of its proper divisors (155183).

1850161 is a wasteful number, since it uses less digits than its factorization.

1850161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 1850161 is about 1360.2062343630. The cubic root of 1850161 is about 122.7636636648.

The spelling of 1850161 in words is "one million, eight hundred fifty thousand, one hundred sixty-one".