2051919772 has 24 divisors (see below), whose sum is σ = 4155791360. Its totient is φ = 868261680.

The previous prime is 2051919707. The next prime is 2051919773. The reversal of 2051919772 is 2779191502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051919773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461604 + ... + 466027.

Almost surely, 2^2051919772 is an apocalyptic number.

It is an amenable number.

2051919772 is an abundant number, since it is smaller than the sum of its proper divisors (2103871588).

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

2051919772 is a wasteful number, since it uses less digits than its factorization.

2051919772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927721 (or 927719 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 43.

The square root of 2051919772 is about 45298.1210647859. The cubic root of 2051919772 is about 1270.7305140638.

The spelling of 2051919772 in words is "two billion, fifty-one million, nine hundred nineteen thousand, seven hundred seventy-two".