1693784961 has 24 divisors (see below), whose sum is σ = 2679183936. Its totient is φ = 1022617440.

The previous prime is 1693784957. The next prime is 1693784999. The reversal of 1693784961 is 1694873961.

It is not a de Polignac number, because 1693784961 - 2² = 1693784957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1693784898 and 1693784907.

It is not an unprimeable number, because it can be changed into a prime (1693784951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6490 + ... + 58563.

It is an arithmetic number, because the mean of its divisors is an integer number (111632664).

Almost surely, 2^1693784961 is an apocalyptic number.

1693784961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1693784961 is a deficient number, since it is larger than the sum of its proper divisors (985398975).

1693784961 is a wasteful number, since it uses less digits than its factorization.

1693784961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65333 (or 65330 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 1693784961 is about 41155.6188265952. The cubic root of 1693784961 is about 1192.0269954042.

The spelling of 1693784961 in words is "one billion, six hundred ninety-three million, seven hundred eighty-four thousand, nine hundred sixty-one".