1742478797 has 2 divisors, whose sum is σ = 1742478798. Its totient is φ = 1742478796.

The previous prime is 1742478779. The next prime is 1742478811. The reversal of 1742478797 is 7978742471.

Together with previous prime (1742478779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1653723556 + 88755241 = 40666^2 + 9421^2 .

It is a cyclic number.

It is not a de Polignac number, because 1742478797 - 2¹⁸ = 1742216653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1742478737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 871239398 + 871239399.

It is an arithmetic number, because the mean of its divisors is an integer number (871239399).

Almost surely, 2^1742478797 is an apocalyptic number.

It is an amenable number.

1742478797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1742478797 is an equidigital number, since it uses as much as digits as its factorization.

1742478797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5531904, while the sum is 56.

The square root of 1742478797 is about 41743.0089595851. The cubic root of 1742478797 is about 1203.3422558421.

The spelling of 1742478797 in words is "one billion, seven hundred forty-two million, four hundred seventy-eight thousand, seven hundred ninety-seven".