1999901076 has 24 divisors (see below), whose sum is σ = 4667204640. Its totient is φ = 666523872.

The previous prime is 1999901053. The next prime is 1999901081. The reversal of 1999901076 is 6701099991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99510 + ... + 117906.

It is an arithmetic number, because the mean of its divisors is an integer number (194466860).

Almost surely, 2^1999901076 is an apocalyptic number.

It is an amenable number.

1999901076 is an abundant number, since it is smaller than the sum of its proper divisors (2667303564).

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

1999901076 is a wasteful number, since it uses less digits than its factorization.

1999901076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27463 (or 27461 counting only the distinct ones).

The product of its (nonzero) digits is 275562, while the sum is 51.

The square root of 1999901076 is about 44720.2535323761. The cubic root of 1999901076 is about 1259.9002768141.

The spelling of 1999901076 in words is "one billion, nine hundred ninety-nine million, nine hundred one thousand, seventy-six".