1693213489 has 4 divisors (see below), whose sum is σ = 1847142000. Its totient is φ = 1539284980.

The previous prime is 1693213463. The next prime is 1693213507. The reversal of 1693213489 is 9843123961.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1693213489 - 2⁹ = 1693212977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1693213409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76964239 + ... + 76964260.

It is an arithmetic number, because the mean of its divisors is an integer number (461785500).

Almost surely, 2^1693213489 is an apocalyptic number.

It is an amenable number.

1693213489 is a deficient number, since it is larger than the sum of its proper divisors (153928511).

1693213489 is a wasteful number, since it uses less digits than its factorization.

1693213489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153928510.

The product of its digits is 279936, while the sum is 46.

The square root of 1693213489 is about 41148.6754221810. The cubic root of 1693213489 is about 1191.8929196128.

The spelling of 1693213489 in words is "one billion, six hundred ninety-three million, two hundred thirteen thousand, four hundred eighty-nine".