3541381572 has 12 divisors (see below), whose sum is σ = 8263223696. Its totient is φ = 1180460520.

The previous prime is 3541381561. The next prime is 3541381577. The reversal of 3541381572 is 2751831453.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 3541381572.

It is not an unprimeable number, because it can be changed into a prime (3541381577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147557554 + ... + 147557577.

Almost surely, 2^3541381572 is an apocalyptic number.

It is an amenable number.

3541381572 is an abundant number, since it is smaller than the sum of its proper divisors (4721842124).

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

3541381572 is a wasteful number, since it uses less digits than its factorization.

3541381572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295115138 (or 295115136 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 3541381572 is about 59509.5082486824. The cubic root of 3541381572 is about 1524.2548106256.

The spelling of 3541381572 in words is "three billion, five hundred forty-one million, three hundred eighty-one thousand, five hundred seventy-two".