3549784540 has 24 divisors (see below), whose sum is σ = 7462697760. Its totient is φ = 1418361408.

The previous prime is 3549784523. The next prime is 3549784541. The reversal of 3549784540 is 454879453.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3549784541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78187 + ... + 114946.

It is an arithmetic number, because the mean of its divisors is an integer number (310945740).

Almost surely, 2^3549784540 is an apocalyptic number.

It is an amenable number.

3549784540 is an abundant number, since it is smaller than the sum of its proper divisors (3912913220).

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

3549784540 is a wasteful number, since it uses less digits than its factorization.

3549784540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194061 (or 194059 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 49.

The square root of 3549784540 is about 59580.0683114748. The cubic root of 3549784540 is about 1525.4594391031.

The spelling of 3549784540 in words is "three billion, five hundred forty-nine million, seven hundred eighty-four thousand, five hundred forty".