1693640692 has 12 divisors (see below), whose sum is σ = 2991063460. Its totient is φ = 839051136.

The previous prime is 1693640659. The next prime is 1693640693. The reversal of 1693640692 is 2960463961.

It can be written as a sum of positive squares in 2 ways, for example, as 439489296 + 1254151396 = 20964^2 + 35414^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1693640693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1941813 + ... + 1942684.

Almost surely, 2^1693640692 is an apocalyptic number.

It is an amenable number.

1693640692 is a deficient number, since it is larger than the sum of its proper divisors (1297422768).

1693640692 is a wasteful number, since it uses less digits than its factorization.

1693640692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884610 (or 3884608 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 1693640692 is about 41153.8660638341. The cubic root of 1693640692 is about 1191.9931506070.

The spelling of 1693640692 in words is "one billion, six hundred ninety-three million, six hundred forty thousand, six hundred ninety-two".