1959161 has 2 divisors, whose sum is σ = 1959162. Its totient is φ = 1959160.

The previous prime is 1959151. The next prime is 1959173. The reversal of 1959161 is 1619591.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 109561 = 1360^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 1959161 - 2¹⁰ = 1958137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1959151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 979580 + 979581.

It is an arithmetic number, because the mean of its divisors is an integer number (979581).

2^1959161 is an apocalyptic number.

It is an amenable number.

1959161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1959161 is an equidigital number, since it uses as much as digits as its factorization.

1959161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 32.

The square root of 1959161 is about 1399.7003250696. The cubic root of 1959161 is about 125.1286355777.

The spelling of 1959161 in words is "one million, nine hundred fifty-nine thousand, one hundred sixty-one".