1975913 has 4 divisors (see below), whose sum is σ = 2024148. Its totient is φ = 1927680.

The previous prime is 1975901. The next prime is 1975921. The reversal of 1975913 is 3195791.

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 692224 + 1283689 = 832^2 + 1133^2 .

It is a cyclic number.

It is not a de Polignac number, because 1975913 - 2⁸ = 1975657 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 (1975933) 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, 24056 + ... + 24137.

It is an arithmetic number, because the mean of its divisors is an integer number (506037).

2^1975913 is an apocalyptic number.

It is an amenable number.

1975913 is a deficient number, since it is larger than the sum of its proper divisors (48235).

1975913 is an equidigital number, since it uses as much as digits as its factorization.

1975913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48234.

The product of its digits is 8505, while the sum is 35.

The square root of 1975913 is about 1405.6717255462. The cubic root of 1975913 is about 125.4842654729.

The spelling of 1975913 in words is "one million, nine hundred seventy-five thousand, nine hundred thirteen".