1912481 has 2 divisors, whose sum is σ = 1912482. Its totient is φ = 1912480.

The previous prime is 1912459. The next prime is 1912487. The reversal of 1912481 is 1842191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1731856 + 180625 = 1316^2 + 425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1912481 is a prime.

It is a super-2 number, since 2×1912481² = 7315167150722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1912481.

It is not a weakly prime, because it can be changed into another prime (1912487) 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, 956240 + 956241.

It is an arithmetic number, because the mean of its divisors is an integer number (956241).

2^1912481 is an apocalyptic number.

It is an amenable number.

1912481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1912481 is an equidigital number, since it uses as much as digits as its factorization.

1912481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 26.

The square root of 1912481 is about 1382.9247991124. The cubic root of 1912481 is about 124.1268429760.

The spelling of 1912481 in words is "one million, nine hundred twelve thousand, four hundred eighty-one".