1999372284 has 108 divisors (see below), whose sum is σ = 6331418184. Its totient is φ = 527300928.

The previous prime is 1999372279. The next prime is 1999372307. The reversal of 1999372284 is 4822739991.

1999372284 is a `hidden beast` number, since 199 + 9 + 372 + 2 + 84 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1999372284.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20662 + ... + 66525.

Almost surely, 2^1999372284 is an apocalyptic number.

1999372284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1999372284 is an abundant number, since it is smaller than the sum of its proper divisors (4332045900).

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

1999372284 is a wasteful number, since it uses less digits than its factorization.

1999372284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87224 (or 87212 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 1999372284 is about 44714.3409210065. The cubic root of 1999372284 is about 1259.7892240021.

The spelling of 1999372284 in words is "one billion, nine hundred ninety-nine million, three hundred seventy-two thousand, two hundred eighty-four".