691834419 has 16 divisors (see below), whose sum is σ = 1029424800. Its totient is φ = 459204768.

The previous prime is 691834379. The next prime is 691834421. The reversal of 691834419 is 914438196.

691834419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 691834419 - 2¹¹ = 691832371 is a prime.

It is a super-2 number, since 2×691834419² = 957269726626135122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (691834919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49764 + ... + 62129.

It is an arithmetic number, because the mean of its divisors is an integer number (64339050).

Almost surely, 2^691834419 is an apocalyptic number.

691834419 is a deficient number, since it is larger than the sum of its proper divisors (337590381).

691834419 is a wasteful number, since it uses less digits than its factorization.

691834419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112131 (or 112125 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 691834419 is about 26302.7454650650. The cubic root of 691834419 is about 884.4379884781.

The spelling of 691834419 in words is "six hundred ninety-one million, eight hundred thirty-four thousand, four hundred nineteen".