1930104521 has 2 divisors, whose sum is σ = 1930104522. Its totient is φ = 1930104520.

The previous prime is 1930104487. The next prime is 1930104557. The reversal of 1930104521 is 1254010391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1929405625 + 698896 = 43925^2 + 836^2 .

It is a cyclic number.

It is not a de Polignac number, because 1930104521 - 2¹⁴ = 1930088137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1930104581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965052260 + 965052261.

It is an arithmetic number, because the mean of its divisors is an integer number (965052261).

Almost surely, 2^1930104521 is an apocalyptic number.

It is an amenable number.

1930104521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1930104521 is an equidigital number, since it uses as much as digits as its factorization.

1930104521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1930104521 is about 43932.9548403018. The cubic root of 1930104521 is about 1245.0695425206.

The spelling of 1930104521 in words is "one billion, nine hundred thirty million, one hundred four thousand, five hundred twenty-one".