1999501532 has 48 divisors (see below), whose sum is σ = 4101898752. Its totient is φ = 835099200.

The previous prime is 1999501531. The next prime is 1999501549. The reversal of 1999501532 is 2351059991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999501531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219623 + ... + 228545.

It is an arithmetic number, because the mean of its divisors is an integer number (85456224).

Almost surely, 2^1999501532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1999501532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2050949376).

1999501532 is an abundant number, since it is smaller than the sum of its proper divisors (2102397220).

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

1999501532 is a wasteful number, since it uses less digits than its factorization.

1999501532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9138 (or 9136 counting only the distinct ones).

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 1999501532 is about 44715.7861610416. The cubic root of 1999501532 is about 1259.8163694768.

The spelling of 1999501532 in words is "one billion, nine hundred ninety-nine million, five hundred one thousand, five hundred thirty-two".