1921280467 has 2 divisors, whose sum is σ = 1921280468. Its totient is φ = 1921280466.

The previous prime is 1921280443. The next prime is 1921280477. The reversal of 1921280467 is 7640821291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1921280467 - 2¹⁹ = 1920756179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1921280407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960640233 + 960640234.

It is an arithmetic number, because the mean of its divisors is an integer number (960640234).

Almost surely, 2^1921280467 is an apocalyptic number.

1921280467 is a deficient number, since it is larger than the sum of its proper divisors (1).

1921280467 is an equidigital number, since it uses as much as digits as its factorization.

1921280467 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1921280467 is about 43832.4134288770. The cubic root of 1921280467 is about 1243.1692401963.

The spelling of 1921280467 in words is "one billion, nine hundred twenty-one million, two hundred eighty thousand, four hundred sixty-seven".