1674564653 has 2 divisors, whose sum is σ = 1674564654. Its totient is φ = 1674564652.

The previous prime is 1674564649. The next prime is 1674564667. The reversal of 1674564653 is 3564654761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1460615524 + 213949129 = 38218^2 + 14627^2 .

It is a cyclic number.

It is not a de Polignac number, because 1674564653 - 2² = 1674564649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1674564598 and 1674564607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1674564623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 837282326 + 837282327.

It is an arithmetic number, because the mean of its divisors is an integer number (837282327).

Almost surely, 2^1674564653 is an apocalyptic number.

It is an amenable number.

1674564653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1674564653 is an equidigital number, since it uses as much as digits as its factorization.

1674564653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 47.

The square root of 1674564653 is about 40921.4449036199. Note that the first 3 decimals coincide. The cubic root of 1674564653 is about 1187.5009706068.

The spelling of 1674564653 in words is "one billion, six hundred seventy-four million, five hundred sixty-four thousand, six hundred fifty-three".