3781461620 has 12 divisors (see below), whose sum is σ = 7941069444. Its totient is φ = 1512584640.

The previous prime is 3781461599. The next prime is 3781461713. The reversal of 3781461620 is 261641873.

It can be written as a sum of positive squares in 2 ways, for example, as 441084004 + 3340377616 = 21002^2 + 57796^2 .

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, 94536521 + ... + 94536560.

It is an arithmetic number, because the mean of its divisors is an integer number (661755787).

Almost surely, 2^3781461620 is an apocalyptic number.

It is an amenable number.

3781461620 is an abundant number, since it is smaller than the sum of its proper divisors (4159607824).

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

3781461620 is a wasteful number, since it uses less digits than its factorization.

3781461620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189073090 (or 189073088 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 3781461620 is about 61493.5900724620. The cubic root of 3781461620 is about 1557.9489838683.

The spelling of 3781461620 in words is "three billion, seven hundred eighty-one million, four hundred sixty-one thousand, six hundred twenty".