1999607472 has 100 divisors (see below), whose sum is σ = 5797095480. Its totient is φ = 665425152.

The previous prime is 1999607471. The next prime is 1999607483. The reversal of 1999607472 is 2747069991.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (1999607471) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1234279 + ... + 1235897.

Almost surely, 2^1999607472 is an apocalyptic number.

1999607472 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 1999607472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2898547740).

1999607472 is an abundant number, since it is smaller than the sum of its proper divisors (3797488008).

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

1999607472 is a wasteful number, since it uses less digits than its factorization.

1999607472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592 (or 2577 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The square root of 1999607472 is about 44716.9707381884. The cubic root of 1999607472 is about 1259.8386187869.

The spelling of 1999607472 in words is "one billion, nine hundred ninety-nine million, six hundred seven thousand, four hundred seventy-two".