1693045357 has 2 divisors, whose sum is σ = 1693045358. Its totient is φ = 1693045356.

The previous prime is 1693045307. The next prime is 1693045379. The reversal of 1693045357 is 7535403961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1522638441 + 170406916 = 39021^2 + 13054^2 .

It is an emirp because it is prime and its reverse (7535403961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1693045357 - 2⁷ = 1693045229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1693045307) 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 as a sum of consecutive naturals, namely, 846522678 + 846522679.

It is an arithmetic number, because the mean of its divisors is an integer number (846522679).

Almost surely, 2^1693045357 is an apocalyptic number.

It is an amenable number.

1693045357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1693045357 is an equidigital number, since it uses as much as digits as its factorization.

1693045357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 43.

The square root of 1693045357 is about 41146.6323895407. The cubic root of 1693045357 is about 1191.8534676132.

The spelling of 1693045357 in words is "one billion, six hundred ninety-three million, forty-five thousand, three hundred fifty-seven".