1999950320 has 40 divisors (see below), whose sum is σ = 4654553280. Its totient is φ = 799176960.

The previous prime is 1999950313. The next prime is 1999950361. The reversal of 1999950320 is 230599991.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 71090 + ... + 95150.

It is an arithmetic number, because the mean of its divisors is an integer number (116363832).

Almost surely, 2^1999950320 is an apocalyptic number.

1999950320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1999950320 is an abundant number, since it is smaller than the sum of its proper divisors (2654602960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1999950320 is a wasteful number, since it uses less digits than its factorization.

1999950320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25113 (or 25107 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 47.

The square root of 1999950320 is about 44720.8041072609. The cubic root of 1999950320 is about 1259.9106176622.

The spelling of 1999950320 in words is "one billion, nine hundred ninety-nine million, nine hundred fifty thousand, three hundred twenty".