1961249 has 2 divisors, whose sum is σ = 1961250. Its totient is φ = 1961248.

The previous prime is 1961231. The next prime is 1961251. The reversal of 1961249 is 9421691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1795600 + 165649 = 1340^2 + 407^2 .

It is an emirp because it is prime and its reverse (9421691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1961249 - 2⁸ = 1960993 is a prime.

Together with 1961251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1961549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980624 + 980625.

It is an arithmetic number, because the mean of its divisors is an integer number (980625).

2^1961249 is an apocalyptic number.

It is an amenable number.

1961249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961249 is an equidigital number, since it uses as much as digits as its factorization.

1961249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 1961249 is about 1400.4460003870. The cubic root of 1961249 is about 125.1730722574.

The spelling of 1961249 in words is "one million, nine hundred sixty-one thousand, two hundred forty-nine".