1999050516 has 30 divisors (see below), whose sum is σ = 5225913770. Its totient is φ = 666350064.

The previous prime is 1999050509. The next prime is 1999050539. The reversal of 1999050516 is 6150509991.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1952756100 + 46294416 = 44190^2 + 6804^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3084631 + ... + 3085278.

Almost surely, 2^1999050516 is an apocalyptic number.

It is an amenable number.

1999050516 is an abundant number, since it is smaller than the sum of its proper divisors (3226863254).

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

1999050516 is a wasteful number, since it uses less digits than its factorization.

1999050516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6169925 (or 6169914 counting only the distinct ones).

The product of its (nonzero) digits is 109350, while the sum is 45.

The square root of 1999050516 is about 44710.7427359466. The cubic root of 1999050516 is about 1259.7216391890.

The spelling of 1999050516 in words is "one billion, nine hundred ninety-nine million, fifty thousand, five hundred sixteen".