1961593 has 2 divisors, whose sum is σ = 1961594. Its totient is φ = 1961592.

The previous prime is 1961581. The next prime is 1961623. The reversal of 1961593 is 3951691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1192464 + 769129 = 1092^2 + 877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1961593 is a prime.

It is not a weakly prime, because it can be changed into another prime (1961513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980796 + 980797.

It is an arithmetic number, because the mean of its divisors is an integer number (980797).

2^1961593 is an apocalyptic number.

It is an amenable number.

1961593 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961593 is an equidigital number, since it uses as much as digits as its factorization.

1961593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 34.

The square root of 1961593 is about 1400.5688130185. The cubic root of 1961593 is about 125.1803902164.

The spelling of 1961593 in words is "one million, nine hundred sixty-one thousand, five hundred ninety-three".