1999475712 has 176 divisors, whose sum is σ = 6378124480. Its totient is φ = 615112704.

The previous prime is 1999475693. The next prime is 1999475713. The reversal of 1999475712 is 2175749991.

1999475712 is a `hidden beast` number, since 19 + 99 + 475 + 71 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999475713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356643 + ... + 362205.

Almost surely, 2^1999475712 is an apocalyptic number.

1999475712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1999475712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3189062240).

1999475712 is an abundant number, since it is smaller than the sum of its proper divisors (4378648768).

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

1999475712 is a wasteful number, since it uses less digits than its factorization.

1999475712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605 (or 5581 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 54.

The square root of 1999475712 is about 44715.4974477529. The cubic root of 1999475712 is about 1259.8109466921.

The spelling of 1999475712 in words is "one billion, nine hundred ninety-nine million, four hundred seventy-five thousand, seven hundred twelve".