1742985281 has 2 divisors, whose sum is σ = 1742985282. Its totient is φ = 1742985280.

The previous prime is 1742985229. The next prime is 1742985329. The reversal of 1742985281 is 1825892471.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1741810225 + 1175056 = 41735^2 + 1084^2 .

It is a cyclic number.

It is not a de Polignac number, because 1742985281 - 2¹⁸ = 1742723137 is a prime.

It is a super-2 number, since 2×1742985281² = 6075995379565297922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1742985581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 871492640 + 871492641.

It is an arithmetic number, because the mean of its divisors is an integer number (871492641).

Almost surely, 2^1742985281 is an apocalyptic number.

It is an amenable number.

1742985281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1742985281 is an equidigital number, since it uses as much as digits as its factorization.

1742985281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 47.

The square root of 1742985281 is about 41749.0752113146. The cubic root of 1742985281 is about 1203.4588358464.

The spelling of 1742985281 in words is "one billion, seven hundred forty-two million, nine hundred eighty-five thousand, two hundred eighty-one".