4274561538 has 64 divisors (see below), whose sum is σ = 10238928000. Its totient is φ = 1314066240.

The previous prime is 4274561513. The next prime is 4274561561. The reversal of 4274561538 is 8351654724.

4274561538 is a `hidden beast` number, since 4 + 27 + 4 + 5 + 615 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 4274561493 and 4274561502.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1085433 + ... + 1089363.

It is an arithmetic number, because the mean of its divisors is an integer number (159983250).

Almost surely, 2^4274561538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4274561538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5119464000).

4274561538 is an abundant number, since it is smaller than the sum of its proper divisors (5964366462).

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

4274561538 is a wasteful number, since it uses less digits than its factorization.

4274561538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5504 (or 5498 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 4274561538 is about 65380.1310644144. The cubic root of 4274561538 is about 1622.9202949777.

The spelling of 4274561538 in words is "four billion, two hundred seventy-four million, five hundred sixty-one thousand, five hundred thirty-eight".