1693718340 has 24 divisors (see below), whose sum is σ = 4742411520. Its totient is φ = 451658208.

The previous prime is 1693718287. The next prime is 1693718353. The reversal of 1693718340 is 438173961.

It is a junction number, because it is equal to n+sod(n) for n = 1693718292 and 1693718301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14114260 + ... + 14114379.

It is an arithmetic number, because the mean of its divisors is an integer number (197600480).

Almost surely, 2^1693718340 is an apocalyptic number.

1693718340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1693718340 is an abundant number, since it is smaller than the sum of its proper divisors (3048693180).

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

1693718340 is a wasteful number, since it uses less digits than its factorization.

1693718340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28228651 (or 28228649 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 1693718340 is about 41154.8094394811. The cubic root of 1693718340 is about 1192.0113666844.

The spelling of 1693718340 in words is "one billion, six hundred ninety-three million, seven hundred eighteen thousand, three hundred forty".