2533478634 has 48 divisors (see below), whose sum is σ = 5710068000. Its totient is φ = 841888080.

The previous prime is 2533478621. The next prime is 2533478641. The reversal of 2533478634 is 4368743352.

2533478634 is a `hidden beast` number, since 2 + 5 + 3 + 3 + 4 + 7 + 8 + 634 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2533478634.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152992 + ... + 168740.

It is an arithmetic number, because the mean of its divisors is an integer number (118959750).

Almost surely, 2^2533478634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2533478634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2855034000).

2533478634 is an abundant number, since it is smaller than the sum of its proper divisors (3176589366).

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

2533478634 is a wasteful number, since it uses less digits than its factorization.

2533478634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16097 (or 16085 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The square root of 2533478634 is about 50333.6729635341. The cubic root of 2533478634 is about 1363.2402973451.

The spelling of 2533478634 in words is "two billion, five hundred thirty-three million, four hundred seventy-eight thousand, six hundred thirty-four".