1351744673 has 2 divisors, whose sum is σ = 1351744674. Its totient is φ = 1351744672.

The previous prime is 1351744663. The next prime is 1351744697. The reversal of 1351744673 is 3764471531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 946608289 + 405136384 = 30767^2 + 20128^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351744673 - 2⁴ = 1351744657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1351744673.

It is not a weakly prime, because it can be changed into another prime (1351744633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675872336 + 675872337.

It is an arithmetic number, because the mean of its divisors is an integer number (675872337).

Almost surely, 2^1351744673 is an apocalyptic number.

It is an amenable number.

1351744673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351744673 is an equidigital number, since it uses as much as digits as its factorization.

1351744673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 41.

The square root of 1351744673 is about 36766.0804682795. The cubic root of 1351744673 is about 1105.6853505879.

The spelling of 1351744673 in words is "one billion, three hundred fifty-one million, seven hundred forty-four thousand, six hundred seventy-three".