1684074797 has 2 divisors, whose sum is σ = 1684074798. Its totient is φ = 1684074796.

The previous prime is 1684074703. The next prime is 1684074803. The reversal of 1684074797 is 7974704861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1681902121 + 2172676 = 41011^2 + 1474^2 .

It is a cyclic number.

It is not a de Polignac number, because 1684074797 - 2¹⁸ = 1683812653 is a prime.

It is a super-2 number, since 2×1684074797² = 5672215843781182418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1684071797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842037398 + 842037399.

It is an arithmetic number, because the mean of its divisors is an integer number (842037399).

Almost surely, 2^1684074797 is an apocalyptic number.

It is an amenable number.

1684074797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1684074797 is an equidigital number, since it uses as much as digits as its factorization.

1684074797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The square root of 1684074797 is about 41037.4803929286. The cubic root of 1684074797 is about 1189.7447365764.

The spelling of 1684074797 in words is "one billion, six hundred eighty-four million, seventy-four thousand, seven hundred ninety-seven".