1355345643 has 8 divisors (see below), whose sum is σ = 1807320528. Its totient is φ = 903467264.

The previous prime is 1355345611. The next prime is 1355345647. The reversal of 1355345643 is 3465435531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1355345643 - 2⁵ = 1355345611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1355345647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20371 + ... + 55907.

It is an arithmetic number, because the mean of its divisors is an integer number (225915066).

Almost surely, 2^1355345643 is an apocalyptic number.

1355345643 is a deficient number, since it is larger than the sum of its proper divisors (451974885).

1355345643 is a wasteful number, since it uses less digits than its factorization.

1355345643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48253.

The product of its digits is 324000, while the sum is 39.

The square root of 1355345643 is about 36815.0192584494. The cubic root of 1355345643 is about 1106.6663074082. Note that the first 3 decimals are identical.

The spelling of 1355345643 in words is "one billion, three hundred fifty-five million, three hundred forty-five thousand, six hundred forty-three".