3781955605 has 32 divisors (see below), whose sum is σ = 4839891840. Its totient is φ = 2828908800.

The previous prime is 3781955591. The next prime is 3781955621. The reversal of 3781955605 is 5065591873.

It is not a de Polignac number, because 3781955605 - 2⁷ = 3781955477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5881414 + ... + 5882056.

It is an arithmetic number, because the mean of its divisors is an integer number (151246620).

Almost surely, 2^3781955605 is an apocalyptic number.

It is an amenable number.

3781955605 is a deficient number, since it is larger than the sum of its proper divisors (1057936235).

3781955605 is a wasteful number, since it uses less digits than its factorization.

3781955605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381.

The product of its (nonzero) digits is 1134000, while the sum is 49.

The square root of 3781955605 is about 61497.6064981394. The cubic root of 3781955605 is about 1558.0168209462.

The spelling of 3781955605 in words is "three billion, seven hundred eighty-one million, nine hundred fifty-five thousand, six hundred five".