1893481 has 2 divisors, whose sum is σ = 1893482. Its totient is φ = 1893480.

The previous prime is 1893473. The next prime is 1893517. The reversal of 1893481 is 1843981.

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., 1245456 + 648025 = 1116^2 + 805^2 .

It is an emirp because it is prime and its reverse (1843981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1893481 - 2³ = 1893473 is a prime.

It is a super-2 number, since 2×1893481² = 7170540594722, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1893431) 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, 946740 + 946741.

It is an arithmetic number, because the mean of its divisors is an integer number (946741).

2^1893481 is an apocalyptic number.

It is an amenable number.

1893481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1893481 is an equidigital number, since it uses as much as digits as its factorization.

1893481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 34.

The square root of 1893481 is about 1376.0381535408. The cubic root of 1893481 is about 123.7144182299.

The spelling of 1893481 in words is "one million, eight hundred ninety-three thousand, four hundred eighty-one".