2051851650 has 48 divisors (see below), whose sum is σ = 5226135744. Its totient is φ = 532370880.

The previous prime is 2051851639. The next prime is 2051851651. The reversal of 2051851650 is 561581502.

It is not an unprimeable number, because it can be changed into a prime (2051851651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179302 + ... + 190401.

It is an arithmetic number, because the mean of its divisors is an integer number (108877828).

Almost surely, 2^2051851650 is an apocalyptic number.

2051851650 is an abundant number, since it is smaller than the sum of its proper divisors (3174284094).

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

2051851650 is a wasteful number, since it uses less digits than its factorization.

2051851650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369755 (or 369750 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 33.

The square root of 2051851650 is about 45297.3691289020. The cubic root of 2051851650 is about 1270.7164515156.

The spelling of 2051851650 in words is "two billion, fifty-one million, eight hundred fifty-one thousand, six hundred fifty".