1961185 has 8 divisors (see below), whose sum is σ = 2417256. Its totient is φ = 1526400.

The previous prime is 1961173. The next prime is 1961213. The reversal of 1961185 is 5811691.

It can be written as a sum of positive squares in 4 ways, for example, as 904401 + 1056784 = 951^2 + 1028^2 .

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

It is not a de Polignac number, because 1961185 - 2¹⁷ = 1830113 is a prime.

It is a Duffinian 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, 5116 + ... + 5485.

It is an arithmetic number, because the mean of its divisors is an integer number (302157).

2^1961185 is an apocalyptic number.

It is an amenable number.

1961185 is a deficient number, since it is larger than the sum of its proper divisors (456071).

1961185 is a wasteful number, since it uses less digits than its factorization.

1961185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10643.

The product of its digits is 2160, while the sum is 31.

The square root of 1961185 is about 1400.4231503371. The cubic root of 1961185 is about 125.1717106822.

The spelling of 1961185 in words is "one million, nine hundred sixty-one thousand, one hundred eighty-five".