1929689424 has 60 divisors (see below), whose sum is σ = 5815875156. Its totient is φ = 593750016.

The previous prime is 1929689423. The next prime is 1929689473. The reversal of 1929689424 is 4249869291.

It can be written as a sum of positive squares in 2 ways, for example, as 1057550400 + 872139024 = 32520^2 + 29532^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1929689423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 513537 + ... + 517280.

Almost surely, 2^1929689424 is an apocalyptic number.

It is an amenable number.

1929689424 is an abundant number, since it is smaller than the sum of its proper divisors (3886185732).

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

1929689424 is a wasteful number, since it uses less digits than its factorization.

1929689424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030844 (or 1030835 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 1929689424 is about 43928.2303763764. The cubic root of 1929689424 is about 1244.9802793605.

The spelling of 1929689424 in words is "one billion, nine hundred twenty-nine million, six hundred eighty-nine thousand, four hundred twenty-four".