1961353 has 4 divisors (see below), whose sum is σ = 1964160. Its totient is φ = 1958548.

The previous prime is 1961347. The next prime is 1961363. The reversal of 1961353 is 3531691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1961353 - 2⁵ = 1961321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1961363) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 576 + ... + 2062.

It is an arithmetic number, because the mean of its divisors is an integer number (491040).

2^1961353 is an apocalyptic number.

It is an amenable number.

1961353 is a deficient number, since it is larger than the sum of its proper divisors (2807).

1961353 is a wasteful number, since it uses less digits than its factorization.

1961353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806.

The product of its digits is 2430, while the sum is 28.

The square root of 1961353 is about 1400.4831309230. The cubic root of 1961353 is about 125.1752847538.

The spelling of 1961353 in words is "one million, nine hundred sixty-one thousand, three hundred fifty-three".