1691424384 has 256 divisors, whose sum is σ = 5397840000. Its totient is φ = 463601664.

The previous prime is 1691424359. The next prime is 1691424421. The reversal of 1691424384 is 4834241961.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1611892 + ... + 1612940.

Almost surely, 2^1691424384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1691424384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2698920000).

1691424384 is an abundant number, since it is smaller than the sum of its proper divisors (3706415616).

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

1691424384 is a wasteful number, since it uses less digits than its factorization.

1691424384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1103 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 1691424384 is about 41126.9301553131. The cubic root of 1691424384 is about 1191.4729739298.

The spelling of 1691424384 in words is "one billion, six hundred ninety-one million, four hundred twenty-four thousand, three hundred eighty-four".