1355329973 has 2 divisors, whose sum is σ = 1355329974. Its totient is φ = 1355329972.

The previous prime is 1355329949. The next prime is 1355330047. The reversal of 1355329973 is 3799235531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 988913809 + 366416164 = 31447^2 + 19142^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355329973 - 2⁶ = 1355329909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355329933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677664986 + 677664987.

It is an arithmetic number, because the mean of its divisors is an integer number (677664987).

Almost surely, 2^1355329973 is an apocalyptic number.

It is an amenable number.

1355329973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355329973 is an equidigital number, since it uses as much as digits as its factorization.

1355329973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 765450, while the sum is 47.

The square root of 1355329973 is about 36814.8064370845. The cubic root of 1355329973 is about 1106.6620424377.

The spelling of 1355329973 in words is "one billion, three hundred fifty-five million, three hundred twenty-nine thousand, nine hundred seventy-three".