1956481 has 2 divisors, whose sum is σ = 1956482. Its totient is φ = 1956480.

The previous prime is 1956439. The next prime is 1956517. The reversal of 1956481 is 1846591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1809025 + 147456 = 1345^2 + 384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1956481 is a prime.

It is a super-2 number, since 2×1956481² = 7655635806722, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1956431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978240 + 978241.

It is an arithmetic number, because the mean of its divisors is an integer number (978241).

2^1956481 is an apocalyptic number.

It is an amenable number.

1956481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956481 is an equidigital number, since it uses as much as digits as its factorization.

1956481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 34.

The square root of 1956481 is about 1398.7426496679. The cubic root of 1956481 is about 125.0715536994.

The spelling of 1956481 in words is "one million, nine hundred fifty-six thousand, four hundred eighty-one".