1353894993 has 20 divisors (see below), whose sum is σ = 2206348848. Its totient is φ = 820541880.

The previous prime is 1353894917. The next prime is 1353895043. The reversal of 1353894993 is 3994983531.

It is a happy number.

1353894993 is a `hidden beast` number, since 13 + 538 + 9 + 4 + 9 + 93 = 666.

It is not a de Polignac number, because 1353894993 - 2¹⁴ = 1353878609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1353894293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 758871 + ... + 760652.

Almost surely, 2^1353894993 is an apocalyptic number.

It is an amenable number.

1353894993 is a deficient number, since it is larger than the sum of its proper divisors (852453855).

1353894993 is a wasteful number, since it uses less digits than its factorization.

1353894993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519546 (or 1519537 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 1353894993 is about 36795.3121062996. The cubic root of 1353894993 is about 1106.2713383991.

The spelling of 1353894993 in words is "one billion, three hundred fifty-three million, eight hundred ninety-four thousand, nine hundred ninety-three".