1930943005 has 4 divisors (see below), whose sum is σ = 2317131612. Its totient is φ = 1544754400.

The previous prime is 1930942999. The next prime is 1930943009. The reversal of 1930943005 is 5003490391.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 887265369 + 1043677636 = 29787^2 + 32306^2 .

It is not a de Polignac number, because 1930943005 - 2⁹ = 1930942493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1930943009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193094296 + ... + 193094305.

It is an arithmetic number, because the mean of its divisors is an integer number (579282903).

Almost surely, 2^1930943005 is an apocalyptic number.

It is an amenable number.

1930943005 is a deficient number, since it is larger than the sum of its proper divisors (386188607).

1930943005 is an equidigital number, since it uses as much as digits as its factorization.

1930943005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386188606.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 1930943005 is about 43942.4965722249. The cubic root of 1930943005 is about 1245.2498125077.

The spelling of 1930943005 in words is "one billion, nine hundred thirty million, nine hundred forty-three thousand, five".