1930443238 has 4 divisors (see below), whose sum is σ = 2895664860. Its totient is φ = 965221618.

The previous prime is 1930443233. The next prime is 1930443257. The reversal of 1930443238 is 8323440391.

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

It is a super-2 number, since 2×1930443238² = 7453222190279849288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1930443197 and 1930443206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1930443233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482610808 + ... + 482610811.

It is an arithmetic number, because the mean of its divisors is an integer number (723916215).

Almost surely, 2^1930443238 is an apocalyptic number.

1930443238 is a deficient number, since it is larger than the sum of its proper divisors (965221622).

1930443238 is an equidigital number, since it uses as much as digits as its factorization.

1930443238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965221621.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 1930443238 is about 43936.8096019727. The cubic root of 1930443238 is about 1245.1423713145.

The spelling of 1930443238 in words is "one billion, nine hundred thirty million, four hundred forty-three thousand, two hundred thirty-eight".