1243473533 has 2 divisors, whose sum is σ = 1243473534. Its totient is φ = 1243473532.

The previous prime is 1243473529. The next prime is 1243473559. The reversal of 1243473533 is 3353743421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 818989924 + 424483609 = 28618^2 + 20603^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243473533 - 2² = 1243473529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243473493 and 1243473502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243473523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621736766 + 621736767.

It is an arithmetic number, because the mean of its divisors is an integer number (621736767).

Almost surely, 2^1243473533 is an apocalyptic number.

It is an amenable number.

1243473533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243473533 is an equidigital number, since it uses as much as digits as its factorization.

1243473533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 35.

The square root of 1243473533 is about 35262.9200861188. The cubic root of 1243473533 is about 1075.3392930808.

The spelling of 1243473533 in words is "one billion, two hundred forty-three million, four hundred seventy-three thousand, five hundred thirty-three".