3724721652 has 12 divisors (see below), whose sum is σ = 8691017216. Its totient is φ = 1241573880.

The previous prime is 3724721647. The next prime is 3724721717. The reversal of 3724721652 is 2561274273.

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 3724721652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155196724 + ... + 155196747.

Almost surely, 2^3724721652 is an apocalyptic number.

It is an amenable number.

3724721652 is an abundant number, since it is smaller than the sum of its proper divisors (4966295564).

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

3724721652 is a wasteful number, since it uses less digits than its factorization.

3724721652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310393478 (or 310393476 counting only the distinct ones).

The product of its digits is 141120, while the sum is 39.

The square root of 3724721652 is about 61030.4977204021. The cubic root of 3724721652 is about 1550.1174592915.

The spelling of 3724721652 in words is "three billion, seven hundred twenty-four million, seven hundred twenty-one thousand, six hundred fifty-two".