3661443748 has 24 divisors (see below), whose sum is σ = 6895668024. Its totient is φ = 1694784000.

The previous prime is 3661443727. The next prime is 3661443763. The reversal of 3661443748 is 8473441663.

3661443748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 330076224 + 3331367524 = 18168^2 + 57718^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3661443698 and 3661443707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437203 + ... + 445498.

It is an arithmetic number, because the mean of its divisors is an integer number (287319501).

Almost surely, 2^3661443748 is an apocalyptic number.

It is an amenable number.

3661443748 is a deficient number, since it is larger than the sum of its proper divisors (3234224276).

3661443748 is a wasteful number, since it uses less digits than its factorization.

3661443748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882783 (or 882781 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 46.

The square root of 3661443748 is about 60509.8648816869. The cubic root of 3661443748 is about 1541.2891532868.

The spelling of 3661443748 in words is "three billion, six hundred sixty-one million, four hundred forty-three thousand, seven hundred forty-eight".