1691916913 has 8 divisors (see below), whose sum is σ = 1703560320. Its totient is φ = 1680291840.

The previous prime is 1691916907. The next prime is 1691916943. The reversal of 1691916913 is 3196191961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1691916913 - 2²⁵ = 1658362481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1691916943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216433 + ... + 224113.

It is an arithmetic number, because the mean of its divisors is an integer number (212945040).

Almost surely, 2^1691916913 is an apocalyptic number.

It is an amenable number.

1691916913 is a deficient number, since it is larger than the sum of its proper divisors (11643407).

1691916913 is a wasteful number, since it uses less digits than its factorization.

1691916913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9167.

The product of its digits is 78732, while the sum is 46.

The square root of 1691916913 is about 41132.9176329616. The cubic root of 1691916913 is about 1191.5886117804.

The spelling of 1691916913 in words is "one billion, six hundred ninety-one million, nine hundred sixteen thousand, nine hundred thirteen".