3525891840 has 216 divisors, whose sum is σ = 12245015328. Its totient is φ = 936714240.

The previous prime is 3525891823. The next prime is 3525891871. The reversal of 3525891840 is 481985253.

3525891840 is a `hidden beast` number, since 3 + 52 + 589 + 18 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 4849557 + ... + 4850283.

Almost surely, 2^3525891840 is an apocalyptic number.

3525891840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3525891840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6122507664).

3525891840 is an abundant number, since it is smaller than the sum of its proper divisors (8719123488).

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

3525891840 is a wasteful number, since it uses less digits than its factorization.

3525891840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 3525891840 is about 59379.2206078861. The cubic root of 3525891840 is about 1522.0292380027.

The spelling of 3525891840 in words is "three billion, five hundred twenty-five million, eight hundred ninety-one thousand, eight hundred forty".