1924996321 has 2 divisors, whose sum is σ = 1924996322. Its totient is φ = 1924996320.

The previous prime is 1924996319. The next prime is 1924996379. The reversal of 1924996321 is 1236994291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1222481296 + 702515025 = 34964^2 + 26505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1924996321 - 2¹ = 1924996319 is a prime.

It is a super-2 number, since 2×1924996321² = 7411221671727070082, which contains 22 as substring.

Together with 1924996319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1924996301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 962498160 + 962498161.

It is an arithmetic number, because the mean of its divisors is an integer number (962498161).

Almost surely, 2^1924996321 is an apocalyptic number.

It is an amenable number.

1924996321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1924996321 is an equidigital number, since it uses as much as digits as its factorization.

1924996321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 46.

The square root of 1924996321 is about 43874.7800108445. The cubic root of 1924996321 is about 1243.9701748845.

The spelling of 1924996321 in words is "one billion, nine hundred twenty-four million, nine hundred ninety-six thousand, three hundred twenty-one".