1961693 has 12 divisors (see below), whose sum is σ = 2187360. Its totient is φ = 1751112.

The previous prime is 1961683. The next prime is 1961737. The reversal of 1961693 is 3961691.

1961693 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 1961693 - 2¹⁰ = 1960669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29246 + ... + 29312.

It is an arithmetic number, because the mean of its divisors is an integer number (182280).

2^1961693 is an apocalyptic number.

It is an amenable number.

1961693 is a deficient number, since it is larger than the sum of its proper divisors (225667).

1961693 is an equidigital number, since it uses as much as digits as its factorization.

1961693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 109 counting only the distinct ones).

The product of its digits is 8748, while the sum is 35.

The square root of 1961693 is about 1400.6045123446. The cubic root of 1961693 is about 125.1825173696.

The spelling of 1961693 in words is "one million, nine hundred sixty-one thousand, six hundred ninety-three".