1693145946 has 32 divisors (see below), whose sum is σ = 3439853568. Its totient is φ = 555482480.

The previous prime is 1693145911. The next prime is 1693145959. The reversal of 1693145946 is 6495413961.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1693145895 and 1693145904.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272551 + ... + 278693.

It is an arithmetic number, because the mean of its divisors is an integer number (107495424).

Almost surely, 2^1693145946 is an apocalyptic number.

1693145946 is an abundant number, since it is smaller than the sum of its proper divisors (1746707622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1693145946 is a wasteful number, since it uses less digits than its factorization.

1693145946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6866.

The product of its digits is 699840, while the sum is 48.

The square root of 1693145946 is about 41147.8546949899. The cubic root of 1693145946 is about 1191.8770710317.

The spelling of 1693145946 in words is "one billion, six hundred ninety-three million, one hundred forty-five thousand, nine hundred forty-six".