1849961 has 4 divisors (see below), whose sum is σ = 1895124. Its totient is φ = 1804800.

The previous prime is 1849933. The next prime is 1849979. The reversal of 1849961 is 1699481.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78400 + 1771561 = 280^2 + 1331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1849961 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1849921) 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 3 ways as a sum of consecutive naturals, for example, 22520 + ... + 22601.

It is an arithmetic number, because the mean of its divisors is an integer number (473781).

2^1849961 is an apocalyptic number.

It is an amenable number.

1849961 is a deficient number, since it is larger than the sum of its proper divisors (45163).

1849961 is an equidigital number, since it uses as much as digits as its factorization.

1849961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45162.

The product of its digits is 15552, while the sum is 38.

The square root of 1849961 is about 1360.1327141129. The cubic root of 1849961 is about 122.7592399746.

It can be divided in two parts, 1849 and 961, that multiplied together give a square (1776889 = 1333²).

The spelling of 1849961 in words is "one million, eight hundred forty-nine thousand, nine hundred sixty-one".