1999597930 has 32 divisors (see below), whose sum is σ = 3928383360. Its totient is φ = 726774720.

The previous prime is 1999597913. The next prime is 1999597931. The reversal of 1999597930 is 397959991.

It is not an unprimeable number, because it can be changed into a prime (1999597931) by changing a digit.

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, 362352 + ... + 367828.

It is an arithmetic number, because the mean of its divisors is an integer number (122761980).

Almost surely, 2^1999597930 is an apocalyptic number.

1999597930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1999597930 is a deficient number, since it is larger than the sum of its proper divisors (1928785430).

1999597930 is a wasteful number, since it uses less digits than its factorization.

1999597930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8814.

The product of its (nonzero) digits is 6200145, while the sum is 61.

The square root of 1999597930 is about 44716.8640447874. The cubic root of 1999597930 is about 1259.8366148271.

The spelling of 1999597930 in words is "one billion, nine hundred ninety-nine million, five hundred ninety-seven thousand, nine hundred thirty".