1355423009 has 2 divisors, whose sum is σ = 1355423010. Its totient is φ = 1355423008.

The previous prime is 1355422993. The next prime is 1355423053. The reversal of 1355423009 is 9003245531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1348945984 + 6477025 = 36728^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355423009 - 2⁴ = 1355422993 is a prime.

It is a super-2 number, since 2×1355423009² = 3674343066653228162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1355423089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677711504 + 677711505.

It is an arithmetic number, because the mean of its divisors is an integer number (677711505).

Almost surely, 2^1355423009 is an apocalyptic number.

It is an amenable number.

1355423009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355423009 is an equidigital number, since it uses as much as digits as its factorization.

1355423009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 1355423009 is about 36816.0699830930. The cubic root of 1355423009 is about 1106.6873639599.

It can be divided in two parts, 13554 and 23009, that added together give a palindrome (36563).

The spelling of 1355423009 in words is "one billion, three hundred fifty-five million, four hundred twenty-three thousand, nine".