1990958930 has 32 divisors (see below), whose sum is σ = 3644048304. Its totient is φ = 783046656.

The previous prime is 1990958917. The next prime is 1990958969. The reversal of 1990958930 is 398590991.

It can be written as a sum of positive squares in 8 ways, for example, as 630160609 + 1360798321 = 25103^2 + 36889^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241964 + ... + 250056.

Almost surely, 2^1990958930 is an apocalyptic number.

1990958930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1990958930 is a deficient number, since it is larger than the sum of its proper divisors (1653089374).

1990958930 is a wasteful number, since it uses less digits than its factorization.

1990958930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8510.

The product of its (nonzero) digits is 787320, while the sum is 53.

The square root of 1990958930 is about 44620.1628190664. The cubic root of 1990958930 is about 1258.0196762003.

The spelling of 1990958930 in words is "one billion, nine hundred ninety million, nine hundred fifty-eight thousand, nine hundred thirty".