2049920964 has 144 divisors (see below), whose sum is σ = 6403837440. Its totient is φ = 538410240.

The previous prime is 2049920959. The next prime is 2049921031. The reversal of 2049920964 is 4690299402.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 886642 + ... + 888950.

Almost surely, 2^2049920964 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 2049920964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3201918720).

2049920964 is an abundant number, since it is smaller than the sum of its proper divisors (4353916476).

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

2049920964 is a wasteful number, since it uses less digits than its factorization.

2049920964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610 (or 2605 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 2049920964 is about 45276.0528756649. The cubic root of 2049920964 is about 1270.3177670138.

The spelling of 2049920964 in words is "two billion, forty-nine million, nine hundred twenty thousand, nine hundred sixty-four".