1961759 has 2 divisors, whose sum is σ = 1961760. Its totient is φ = 1961758.

The previous prime is 1961753. The next prime is 1961767. The reversal of 1961759 is 9571691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1961759 - 2¹² = 1957663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1961753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980879 + 980880.

It is an arithmetic number, because the mean of its divisors is an integer number (980880).

2^1961759 is an apocalyptic number.

1961759 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961759 is an equidigital number, since it uses as much as digits as its factorization.

1961759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 38.

The square root of 1961759 is about 1400.6280734014. The cubic root of 1961759 is about 125.1839212511.

The spelling of 1961759 in words is "one million, nine hundred sixty-one thousand, seven hundred fifty-nine".