1961875 has 20 divisors (see below), whose sum is σ = 2542936. Its totient is φ = 1512000.

The previous prime is 1961873. The next prime is 1961887. The reversal of 1961875 is 5781691.

It is not a de Polignac number, because 1961875 - 2¹ = 1961873 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1961873) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26839 + ... + 26911.

2^1961875 is an apocalyptic number.

1961875 is a deficient number, since it is larger than the sum of its proper divisors (581061).

1961875 is an frugal number, since it uses more digits than its factorization.

1961875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 121 counting only the distinct ones).

The product of its digits is 15120, while the sum is 37.

The square root of 1961875 is about 1400.6694827831. The cubic root of 1961875 is about 125.1863886028.

The spelling of 1961875 in words is "one million, nine hundred sixty-one thousand, eight hundred seventy-five".