3513578868 has 72 divisors (see below), whose sum is σ = 9198232680. Its totient is φ = 1129524480.

The previous prime is 3513578851. The next prime is 3513578869. The reversal of 3513578868 is 8688753153.

3513578868 is a `hidden beast` number, since 3 + 5 + 1 + 3 + 578 + 8 + 68 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1296864144 + 2216714724 = 36012^2 + 47082^2 .

It is a super-2 number, since 2×3513578868² = 24690472923312322848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3513578869) 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, 1440546 + ... + 1442982.

Almost surely, 2^3513578868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3513578868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4599116340).

3513578868 is an abundant number, since it is smaller than the sum of its proper divisors (5684653812).

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

3513578868 is a wasteful number, since it uses less digits than its factorization.

3513578868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857 (or 3852 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The square root of 3513578868 is about 59275.4491168140. The cubic root of 3513578868 is about 1520.2554493339.

It can be divided in two parts, 35135 and 78868, that added together give a triangular number (114003 = T₄₇₇).

The spelling of 3513578868 in words is "three billion, five hundred thirteen million, five hundred seventy-eight thousand, eight hundred sixty-eight".