1930990442 has 8 divisors (see below), whose sum is σ = 2897208000. Its totient is φ = 965254444.

The previous prime is 1930990427. The next prime is 1930990471. The reversal of 1930990442 is 2440990391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1930990442.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110192 + ... + 126507.

It is an arithmetic number, because the mean of its divisors is an integer number (362151000).

Almost surely, 2^1930990442 is an apocalyptic number.

1930990442 is a deficient number, since it is larger than the sum of its proper divisors (966217558).

1930990442 is a wasteful number, since it uses less digits than its factorization.

1930990442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240780.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 1930990442 is about 43943.0363311413. The cubic root of 1930990442 is about 1245.2600096725.

The spelling of 1930990442 in words is "one billion, nine hundred thirty million, nine hundred ninety thousand, four hundred forty-two".