1999673232 has 40 divisors (see below), whose sum is σ = 5236596384. Its totient is φ = 657425664.

The previous prime is 1999673231. The next prime is 1999673281. The reversal of 1999673232 is 2323769991.

It is not an unprimeable number, because it can be changed into a prime (1999673231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281838 + ... + 288845.

Almost surely, 2^1999673232 is an apocalyptic number.

1999673232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1999673232 is an abundant number, since it is smaller than the sum of its proper divisors (3236923152).

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

1999673232 is a wasteful number, since it uses less digits than its factorization.

1999673232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570767 (or 570761 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 51.

The square root of 1999673232 is about 44717.7060234534. The cubic root of 1999673232 is about 1259.8524291773.

The spelling of 1999673232 in words is "one billion, nine hundred ninety-nine million, six hundred seventy-three thousand, two hundred thirty-two".