2051438562 has 72 divisors (see below), whose sum is σ = 4696914768. Its totient is φ = 670923000.

The previous prime is 2051438527. The next prime is 2051438579. The reversal of 2051438562 is 2658341502.

2051438562 is a `hidden beast` number, since 2 + 0 + 51 + 43 + 8 + 562 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8172937 + ... + 8173187.

Almost surely, 2^2051438562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2051438562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2348457384).

2051438562 is an abundant number, since it is smaller than the sum of its proper divisors (2645476206).

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

2051438562 is an frugal number, since it uses more digits than its factorization.

2051438562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 2051438562 is about 45292.8091643696. The cubic root of 2051438562 is about 1270.6311703424.

The spelling of 2051438562 in words is "two billion, fifty-one million, four hundred thirty-eight thousand, five hundred sixty-two".