1990004330 has 32 divisors (see below), whose sum is σ = 3823666560. Its totient is φ = 743480640.

The previous prime is 1990004329. The next prime is 1990004339. The reversal of 1990004330 is 334000991.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1990004293 and 1990004302.

It is not an unprimeable number, because it can be changed into a prime (1990004339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60269 + ... + 87248.

It is an arithmetic number, because the mean of its divisors is an integer number (119489580).

Almost surely, 2^1990004330 is an apocalyptic number.

1990004330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1990004330 is a deficient number, since it is larger than the sum of its proper divisors (1833662230).

1990004330 is a wasteful number, since it uses less digits than its factorization.

1990004330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147614.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 1990004330 is about 44609.4645787192. The cubic root of 1990004330 is about 1257.8185842294.

The spelling of 1990004330 in words is "one billion, nine hundred ninety million, four thousand, three hundred thirty".