1999385232 has 120 divisors (see below), whose sum is σ = 5909371776. Its totient is φ = 578955264.

The previous prime is 1999385231. The next prime is 1999385279. The reversal of 1999385232 is 2325839991.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1999385231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174793 + ... + 185879.

Almost surely, 2^1999385232 is an apocalyptic number.

1999385232 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 1999385232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2954685888).

1999385232 is an abundant number, since it is smaller than the sum of its proper divisors (3909986544).

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

1999385232 is a wasteful number, since it uses less digits than its factorization.

1999385232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11145 (or 11122 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 51.

The square root of 1999385232 is about 44714.4857065359. The cubic root of 1999385232 is about 1259.7919434749.

The spelling of 1999385232 in words is "one billion, nine hundred ninety-nine million, three hundred eighty-five thousand, two hundred thirty-two".